A channel is a passageway, a means of access for a thing, a communication, or an idea.

Think of a channel as sort of a tunnel or a funnel that moves something directly through. The noun channel can be used for many such avenues. It can mean a waterway such as the English Channel — the "Chunnel" is a tunnel beneath the Channel — or a means of accomplishing a goal, as in "going through legal channels." Use it as a verb when you channel your energies to achieve success.

Definitions of channel
  1. noun
    a deep and relatively narrow body of water (as in a river or a harbor or a strait linking two larger bodies) that allows the best passage for vessels
    “the ship went aground in the channel
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    Harlem River
    a channel separating Manhattan from the Bronx
    English Channel
    an arm of the Atlantic Ocean that forms a channel between France and Britain
    Hampton Roads
    a channel in southeastern Virginia through which the Elizabeth River and the James River flow into Chesapeake Bay
    Mozambique Channel
    an arm of the Indian Ocean between Madagascar and southeastern Africa
    Windward Passage
    a channel between eastern Cuba and western Haiti that connects the Atlantic Ocean with the Caribbean Sea
    Canakkale Bogazi
    the strait between the Aegean and the Sea of Marmara that separates European Turkey from Asian Turkey
    East River
    a tidal strait separating Manhattan and the Bronx from Queens and Brooklyn
    Verrazano Narrows
    a narrow channel of water separating Staten Island and Brooklyn
    Bering Strait
    a strait connecting the Bering Sea to the Arctic Ocean
    a strait connecting the Mediterranean and the Black Sea; separates the European and Asian parts of Turkey; an important shipping route
    Cook Strait
    a narrow strait separating the North Island and South Island in New Zealand
    Golden Gate
    a strait in western California that connects the San Francisco Bay with the Pacific Ocean; discovered in 1579 by Sir Francis Drake
    a strait of the North Sea between Jutland and Sweden; connects with the North Sea through the Skagerrak
    Korean Strait
    a strait between Korea and Japan; connects the East China Sea and the Sea of Japan
    Menai Strait
    a strait in northern Wales between Anglesey Island and the mainland
    North Channel
    a strait between Northern Ireland and Scotland that connects the Atlantic Ocean and the Irish Sea
    a broad strait of the North Sea between Jutland and Norway
    a strait of the English Channel between the coast of Hampshire and the Isle of Wight
    Strait of Georgia
    the strait separating Vancouver Island from the Canadian mainland
    Strait of Gibraltar
    the strait between Spain and Africa
    Strait of Hormuz
    a strategically important strait linking the Persian Gulf and the Gulf of Oman
    Strait of Magellan
    the strait separating South America from Tierra del Fuego and other islands to the south of the continent; discovered by Ferdinand Magellan in 1520; an important route around South America before the Panama Canal was built
    Strait of Messina
    the strait separating Sicily from the tip of Italy
    Strait of Calais
    the strait between the English Channel and the North Sea; shortest distance between England and the European continent
    Torres Strait
    a strait between northeastern Australia and southern New Guinea that connects the Coral Sea with the Arafura Sea
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    (astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion
    a narrow channel or strait
    a small channel (as one formed by soil erosion)
    sound, strait
    a narrow channel of the sea joining two larger bodies of water
    a channel in which a tidal current runs
    natural or artificial channel through which water flows
    a narrow strait connecting two bodies of water
    type of:
    body of water, water
    the part of the earth's surface covered with water (such as a river or lake or ocean)
  2. noun
    a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
    synonyms: groove
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    a rectangular groove cut into a board so that another piece can fit into it
    flute, fluting
    a groove or furrow in cloth etc (particularly a shallow concave groove on the shaft of a column)
    a narrow groove beside a beading
    rabbet, rebate
    a rectangular groove made to hold two pieces together
    a groove on a phonograph recording
    a groove or furrow (especially one in soft earth caused by wheels)
    stria, striation
    any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue
    the channel or break produced by erosion of relatively soft soil by water
    type of:
    depression, impression, imprint
    a concavity in a surface produced by pressing
  3. noun
    a passage for water (or other fluids) to flow through
    “the fields were crossed with irrigation channels
    “gutters carried off the rainwater into a series of channels under the street”
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    gutter, trough
    a channel along the eaves or on the roof; collects and carries away rainwater
    a channel or gutter on either side of a ship's keelson; carries bilge water into the pump well
    chute, slide, slideway, sloping trough
    sloping channel through which things can descend
    a gutter in a roof
    type of:
    a way through or along which someone or something may pass
  4. noun
    a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
    “poison is released through a channel in the snake's fangs”
    synonyms: canal, duct, epithelial duct
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    any small opening in the skin or outer surface of an animal
    canalis vertebralis, spinal canal, vertebral canal
    the canal in successive vertebrae through which the spinal cord passes
    ductule, ductulus
    a very small duct
    a small canal or duct as in some bones and parts of plants
    Schlemm's canal, canal of Schlemm, sinus venosus sclerae
    a circular canal in the eye that drains aqueous humor from the anterior chamber of the eye into the anterior ciliary veins
    sinus, venous sinus
    a wide channel containing blood; does not have the coating of an ordinary blood vessel
    lachrymal duct, lacrimal duct, tear duct
    any of several small ducts that carry tears from the lacrimal glands
    nasolacrimal duct
    a duct that carries tears from the lacrimal sac to the nasal cavity
    Haversian canal
    any of the many tiny canals that contain blood vessels and connective tissue and that form a network in bone
    hepatic duct
    the duct that drains bile from the liver
    canalis inguinalis, inguinal canal
    oblique passage through the lower abdominal wall; in males it is the passage through which the testes descend into the scrotum and it contains the spermatic cord; in females it transmits the round ligament of the uterus
    bile duct, common bile duct
    a duct formed by the hepatic and cystic ducts; opens into the duodenum
    pancreatic duct
    a duct connecting the pancreas with the intestine
    lymph vessel, lymphatic vessel
    a vascular duct that carries lymph which is eventually added to the venous blood circulation
    salivary duct
    a duct through which saliva passes from the salivary gland into the mouth
    Sylvian aqueduct, aqueductus cerebri, cerebral aqueduct
    a canal connecting the third and fourth ventricles
    either of a pair of thick-walled tubes that carry urine from the kidney to the urinary bladder
    duct through which urine is discharged in most mammals and which serves as the male genital duct
    canalis cervicis uteri, cervical canal
    a spindle-shaped canal extending from the uterus to the vagina
    umbilical, umbilical cord
    membranous duct connecting the fetus with the placenta
    the lower part of the female reproductive tract; a moist canal in female mammals extending from the labia minora to the uterus
    a convoluted tubule in each testis; carries sperm to vas deferens
    ductus deferens, vas deferens
    a duct that carries spermatozoa from the epididymis to the ejaculatory duct
    ejaculatory duct
    a part of the seminal duct formed by the duct from the seminal vesicle and the vas deferens; passes through the prostate gland
    cartilaginous tube
    a duct with cartilaginous walls
    any of the smallest bronchial ducts; ending in alveoli
    GI tract, alimentary canal, alimentary tract, digestive tract, digestive tube, gastrointestinal tract
    tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination
    lactiferous duct
    ducts of the mammary gland that carry milk to the nipple
    cavernous sinus, sinus cavernosus
    either of a pair of large venous sinuses in the cranial cavity
    coronary sinus, sinus coronarius
    a short sinus receiving most of the veins of the heart; empties into the right atrium
    sigmoid sinus, sinus sigmoideus
    an S-shaped dural sinus on the temporal and occipital bones
    sinus rectus, straight sinus, tentorial sinus
    an unpaired sinus of the dura mater
    sinus transversus, transverse sinus
    a paired dural sinus; terminates in the sigmoid sinus
    sweat duct
    a small duct that conveys sweat from a sudoriferous gland to the surface of the skin
    biliary ductule
    excretory ducts of the liver; empty into the hepatic ducts
    thoracic duct
    the major duct of the lymphatic system
    any of the lymphatic vessels that convey chyle from the small intestine to the thoracic duct
    bronchial tube, bronchus
    either of the two main branches of the trachea
    trachea, windpipe
    membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
    the alimentary canal (especially of an embryo or a coelenterate)
    a small pore especially one in the reproductive bodies of certain algae and fungi through which spores pass
    type of:
    passage, passageway
    a path or channel or duct through or along which something may pass
  5. noun
    a path over which electrical signals can pass
    “a channel is typically what you rent from a telephone company”
    synonyms: transmission channel
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    type of:
    communication by means of transmitted signals
  6. noun
    a television station and its programs
    “surfing through the channels
    “they offer more than one hundred channels
    synonyms: TV channel, television channel
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    type of:
    TV station, television station
    station for the production and transmission of television broadcasts
  7. noun
    (often plural) a means of communication or access
    “it must go through official channels
    synonyms: communication channel, line
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    back channel
    an alternative to the regular channels of communication that is used when agreements must be made secretly (especially in diplomacy or government)
    (metaphor) a channel through which something can be seen or understood
    contact, inter-group communication, liaison, link
    a channel for communication between groups
    line of gab, patter, spiel
    plausible glib talk (especially useful to a salesperson)
    type of:
    communicating, communication
    the activity of communicating; the activity of conveying information
  8. verb
    transmit or serve as the medium for transmission
    synonyms: carry, conduct, convey, impart, transmit
    carry, convey, express
    serve as a means for expressing something
    be conveyed over a certain distance
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    wash up
    carry somewhere (of water or current or waves)
    pipe in
    bring in through pipes
    bring in
    transmit again
    type of:
    bring, convey, take
    take something or somebody with oneself somewhere
  9. verb
    send from one person or place to another
    synonyms: channelise, channelize, transfer, transmit, transport
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    bring, convey, fetch, get
    go or come after and bring or take back
    transfer (ideas or principles) from one domain into another
    bring to a certain spiritual state
    release, turn
    let (something) fall or spill from a container
    send, send out
    to cause or order to be taken, directed, or transmitted to another place
    run after, pick up, and bring to the master
    go for and bring back
    release contained air or gas from
    throw (a die) out onto a flat surface
    send in
    mail in; cause to be delivered
    mail out
    transmit by mail
    get off, mail
    send via the postal service
    bring to a destination, make a delivery
    type of:
    displace, move
    cause to move or shift into a new position or place, both in a concrete and in an abstract sense
  10. verb
    direct the flow of
    channel information towards a broad audience”
    synonyms: canalise, canalize
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    type of:
    channelise, channelize, direct, guide, head, maneuver, manoeuver, manoeuvre, point, steer
    direct the course; determine the direction of travelling
  11. noun
    a way of selling a company's product either directly or via distributors
    “possible distribution channels are wholesalers or small retailers or retail chains or direct mailers or your own stores”
    synonyms: distribution channel
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    type of:
    the commercial processes involved in promoting and selling and distributing a product or service
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