Whether it’s the bones making up a skeleton or the wooden sections on your breakfast table, the point where two things come together is called a joint.

The noun joint came into English through the French word joindre, meaning “to join.” Use joint to describe the point where two things connect, or join. A joint on your body allows for movement — you can look at your finger to see how that works. As an adjective, joint means "combined," like a joint gift to someone that was purchased with money combined from two or more people.

Definitions of joint
  1. noun
    junction by which parts or objects are joined together
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    ball-and-socket joint
    a joint that can rotate within a socket
    butt, butt joint
    a joint made by fastening ends together without overlapping
    flexible joint, hinge
    a joint that holds two parts together so that one can swing relative to the other
    hinge joint, knuckle joint
    a joint allowing movement in one plane only
    lap joint, splice
    joint made by overlapping two ends and joining them together
    miter, miter joint, mitre, mitre joint
    joint that forms a corner; usually both sides are bevelled at a 45-degree angle to form a 90-degree corner
    mortise joint, mortise-and-tenon joint
    a joint made by inserting tenon on one piece into mortise holes in the other
    rabbet joint
    a joint formed by fitting together two rabbeted boards
    scarf, scarf joint
    a joint made by notching the ends of two pieces of timber or metal so that they will lock together end-to-end
    joint consisting of a line formed by joining two pieces
    toggle joint
    a joint made by two arms attached by a pivot; used to apply pressure at the two ends by straightening the joint
    a metal joint formed by softening with heat and fusing or hammering together
    butt hinge
    a hinge mortised flush into the edge of the door and jamb
    butt weld, butt-weld
    a butt joint that is welded
    dovetail, dovetail joint
    a mortise joint formed by interlocking tenons and mortises
    fell, felled seam
    seam made by turning under or folding together and stitching the seamed materials to avoid rough edges
    fish joint
    a butt joint formed by bolting fish plates to the sides of two rails or beams
    spot weld, spot-weld
    each of the welds made by welding at a separate point
    joint hinge, strap hinge
    a hinge with two long straps; one strap is fastened to the surface of a moving part (e.g., a door or lid) and the other is fastened to the adjacent stationary frame
    stitch, surgical seam, suture
    a seam used in surgery
    T hinge, tee hinge
    a hinge that looks like the letter T when it is opened; similar to a strap hinge except that one strap has been replaced by half of a butt hinge that can be mortised flush into the stationary frame
    tongue and groove joint
    a mortise joint made by fitting a projection on the edge of one board into a matching groove on another board
    a raised or strengthened seam
    type of:
    conjunction, junction
    something that joins or connects
  2. noun
    the shape or manner in which things come together and a connection is made
    synonyms: articulation, join, junction, juncture
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    esophagogastric junction, oesophagogastric junction
    the junction between the esophagus and the stomach epithelium
    type of:
    connection, connexion, link
    a connecting shape
  3. noun
    (anatomy) the point of connection between two bones or elements of a skeleton (especially if it allows motion)
    synonyms: articulatio, articulation
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    fetlock, fetlock joint
    the joint between the cannon bone and the pastern
    hock, hock-joint
    tarsal joint of the hind leg of hoofed mammals; corresponds to the human ankle
    knee, stifle
    joint between the femur and tibia in a quadruped; corresponds to the human knee
    the joint of a mammal or bird that corresponds to the human elbow
    fibrous joint, sutura, suture
    an immovable joint (especially between the bones of the skull)
    articulatio synovialis, diarthrosis, synovial joint
    a joint so articulated as to move freely
    articulatio temporomandibularis, mandibular joint, temporomandibular joint
    the joint between the head of the lower jawbone and the temporal bone
    coronal suture, sutura coronalis
    the suture between the parietal and frontal bones of the skull
    frontal suture, sutura frontalis
    the suture between two halves of the frontal bone (usually obliterated by the age of 6)
    intermaxillary suture, sutura intermaxillaris
    the suture between the two maxillae of the upper jawbone
    internasal suture, sutura internasalis
    the suture between the two nasal bones
    lamboid suture, sutura lamboidea
    the suture between the occipital and parietal bones
    occipitomastoid suture
    the suture between the occipital and the temporal bones; a continuation of the lamboid suture
    parietomastoid suture
    the suture between the parietal and the temporal bones
    interparietal suture, sagittal suture, sutura sagittalis
    the suture uniting the two parietal bones
    articulatio plana, gliding joint
    a freely moving joint in which the articulations allow only gliding motions
    ginglymoid joint, ginglymus, hinge joint
    a freely moving joint in which the bones are so articulated as to allow extensive movement in one plane
    knuckle, knuckle joint, metacarpophalangeal joint
    a joint of a finger when the fist is closed
    articulatio spheroidea, ball-and-socket joint, cotyloid joint, enarthrodial joint, enarthrosis, spheroid joint
    a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone
    articulatio trochoidea, pivot joint, rotary joint, rotatory joint
    a freely moving joint in which movement is limited to rotation
    type of:
    body part
    any part of an organism such as an organ or extremity
  4. adjective
    united or combined
    “a joint session of Congress”
    joint owners”
    forming a whole or aggregate
    belonging to or participated in by a community as a whole; public
    not segregated; designated as available to all races or groups
    characteristic of a clan especially in being unified
    concerted, conjunct, conjunctive, cooperative
    involving the joint activity of two or more
    conjoined, conjoint
    consisting of two or more associated entities
    collective, corporate
    done by or characteristic of individuals acting together
    signing jointly with others
    have in common; held or experienced in common
    characterized by unity; being or joined into a single entity
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    independent; not united or joint
    individual, single
    being or characteristic of a single thing or person
    free from external control and constraint
    segregated, unintegrated
    separated or isolated from others or a main group
    not the same one or ones already mentioned or implied
    having characteristics not shared by others
    widely separated especially in space
    detached, isolated, separated, set-apart
    being or feeling set or kept apart from others
    discrete, distinct
    constituting a separate entity or part
    having no elements in common
    disjunct, isolated
    marked by separation of or from usually contiguous elements
    capable of being isolated or disjoined
    (of a state or an event) taking place without something specified occurring at the same time
    not shared
    separated into parts or pieces
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  5. adjective
    affecting or involving two or more
    joint income-tax return”
    joint ownership”
    have in common; held or experienced in common
  6. adjective
    involving both houses of a legislature
    “a joint session of Congress”
    many-sided, multilateral
    having many parts or sides
  7. verb
    provide with a joint
    “the carpenter jointed two pieces of wood”
    synonyms: articulate
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    type of:
    furnish, provide, render, supply
    give something useful or necessary to
  8. verb
    fasten with a joint
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    type of:
    fasten, fix, secure
    cause to be firmly attached
  9. verb
    fit as if by joints
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    type of:
    fit, go
    be the right size or shape; fit correctly or as desired
  10. noun
    a piece of meat roasted or for roasting and of a size for slicing into more than one portion
    synonyms: roast
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    blade roast
    a roast cut from the blade
    pot roast
    cut of beef suitable for simmering in liquid in a closed pot
    rib roast, standing rib roast
    a cut of meat (beef or venison) including more than one rib and the meat located along the outside of the ribs
    top round
    roast cut from the round; usually suitable for roasting
    rump roast
    a cut of beef or veal from the fleshy hindquarters of the animal
    beef roast, roast beef
    cut of beef suitable for roasting
    roast veal, veal roast
    cut of veal suitable for roasting
    lamb roast, roast lamb
    a cut of lamb suitable for roasting
    pork roast, roast pork
    cut of pork suitable for roasting
    bottom round
    cut from the round; suitable for pot roast
    breast of veal
    usually stuffed and roasted
    larded veal braised and glazed in its own juices
    crown roast, rack of lamb
    a roast of the rib section of lamb
    gigot, leg of lamb
    lamb leg suitable for roasting
    type of:
    cut, cut of meat
    a piece of meat that has been cut from an animal carcass
  11. verb
    separate (meat) at the joint
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    type of:
    disunite, divide, part, separate
    force, take, or pull apart
  12. noun
    marijuana leaves rolled into a cigarette for smoking
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    type of:
    butt, cigaret, cigarette, coffin nail, fag
    finely ground tobacco wrapped in paper; for smoking
  13. noun
    a disreputable place of entertainment
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    jook, jook house, jook joint, juke, juke house, juke joint
    a small roadside establishment in the southeastern United States where you can eat and drink and dance to music provided by a jukebox
    type of:
    a business establishment for entertainment
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