A loop is a roundish, coiled shape, like the shape a piece of string or rope makes when it crosses itself. To start knitting, you need to put a loop of yarn on the end of one of your needles.

Loops are ovals or circles and are often made from rope or other fibers, like the loop at the end of a cowboy's lasso. The verb loop means to form the shape of a loop in the sky; or to make a loop from string or some other material. If something "throws you for a loop," it catches you by surprise, and if you're "in the loop," you have access to information that others might not have.

Definitions of loop
  1. noun
    anything with a round or oval shape (formed by a curve that is closed and does not intersect itself)
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    a thin flat strip or loop of flexible material that goes around or over something else, typically to hold it together or as a decoration
    endless loop of flexible material between two rotating shafts or pulleys
    drip loop
    a downward hanging loop in a line that runs to a building
    noose, running noose, slip noose
    a loop formed in a cord or rope by means of a slipknot; it binds tighter as the cord or rope is pulled
    the enhanced response of an antenna in a given direction as indicated by a loop in its radiation pattern
    a loop in a rope
    a driving belt in machinery
    clench, clinch
    a small slip noose made with seizing
    conveyer, conveyer belt, conveyor, conveyor belt, transporter
    a moving belt that transports objects (as in a factory)
    driving belt
    a belt that carries motion from a motor to the machinery
    fan belt
    a belt driven by the crankshaft that drives a fan that pulls air through the radiator
    caterpillar track, caterpillar tread, track
    an endless metal belt on which tracked vehicles move over the ground
    major lobe
    the maximum lobe in the radiation pattern which is intended to be along the forward axis and which gives the effect of a beam
    type of:
    Jordan curve, simple closed curve
    a closed curve that does not intersect itself
  2. noun
    an intrauterine device in the shape of a loop
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    type of:
    IUD, intrauterine device
    contraceptive device consisting of a piece of bent plastic or metal that is inserted through the vagina into the uterus
  3. noun
    a flight maneuver; aircraft flies a complete circle in the vertical plane
    synonyms: loop-the-loop
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    inside loop
    a loop consisting of a climb followed by inverted flight followed by a dive that returns to horizontal flight
    outside loop
    a loop consisting of a dive followed by inverted flight followed by a climb that returns to horizontal flight
    type of:
    airplane maneuver, flight maneuver
    a maneuver executed by an aircraft
  4. verb
    move in loops
    “The bicycle looped around the tree”
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    type of:
    circle, circulate
    move in circles
  5. verb
    fly loops, perform a loop
    “the stunt pilot looped his plane”
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    type of:
    circle, circulate
    move in circles
  6. verb
    make a loop in
    loop a rope”
    synonyms: intertwine
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    crochet, hook
    make a piece of needlework by interlocking and looping thread with a hooked needle
    make a noose in or of
    type of:
    entwine, knit
    tie or link together
  7. verb
    wind around something in coils or loops
    synonyms: coil, curl
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    unwind or untwist
    type of:
    roll, twine, wind, wrap
    arrange or or coil around
  8. noun
    fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines
    synonyms: cringle, eyelet, grommet, grummet
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    type of:
    fastener, fastening, fixing, holdfast
    restraint that attaches to something or holds something in place
  9. verb
    fasten or join with a loop
    “He looped the watch through his belt”
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    type of:
    bind, tie
    fasten or secure with a rope, string, or cord
  10. noun
    a computer program that performs a series of instructions repeatedly until some specified condition is satisfied
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    type of:
    computer program, computer programme, program, programme
    (computer science) a sequence of instructions that a computer can interpret and execute
  11. noun
    (computer science) a single execution of a set of instructions that are to be repeated
    synonyms: iteration
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    type of:
    physical process, process
    a sustained phenomenon or one marked by gradual changes through a series of states
  12. noun
    the basic pattern of the human fingerprint
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    type of:
    a print made by an impression of the ridges in the skin of a finger; often used for biometric identification in criminal investigations
  13. noun
    an inner circle of advisors (especially under President Reagan)
    “he's no longer in the loop
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    type of:
    camp, clique, coterie, ingroup, inner circle, pack
    an exclusive circle of people with a common purpose
  14. noun
    the topology of a network whose components are serially connected in such a way that the last component is connected to the first component
    synonyms: loop topology
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    type of:
    network topology, topology
    the configuration of a communication network
  15. noun
    a complete electrical circuit around which current flows or a signal circulates
    synonyms: closed circuit
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    open circuit
    an incomplete electrical circuit in which no current flows
    parallel circuit, shunt circuit
    a closed circuit in which the current divides into two or more paths before recombining to complete the circuit
    type of:
    circuit, electric circuit, electrical circuit
    an electrical device that provides a path for electrical current to flow
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