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Definitions for Lock

[1] a device for securing a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, dial, etc.
[2] a contrivance for fastening or securing something.
[3] (in a firearm) the mechanism that explodes the charge; gunlock. safety(def 4) .
[4] any device or part for stopping temporarily the motion of a mechanism.
[5] an enclosed chamber in a canal, dam, etc., with gates at each end, for raising or lowering vessels from one level to another by admitting or releasing water.
[6] an air lock or decompression chamber.
[7] complete and unchallenged control; an unbreakable hold: The congresswoman has a lock on the senatorial nomination.
[8] Slang . someone or something certain of success; sure thing: He's a lock to win the championship.
[9] Wrestling . any of various holds, especially a hold secured on the arm, leg, or head: leg lock.
[10] Horology . (in an escapement) the overlap between a tooth of an escape wheel and the surface of the pallet locking it.
[11] Metalworking . a projection or recession in the mating face of a forging die.
[12] to fasten or secure (a door, window, building, etc.) by the operation of a lock or locks.
[13] to shut in a place fastened by a lock or locks, as for security or restraint.
[14] to make fast or immovable by or as if by a lock: He locked the steering wheel on his car.
[15] to make fast or immovable, as by engaging parts: to lock the wheels of a wagon.
[16] to join or unite firmly by interlinking or intertwining: to lock arms.
[17] to hold fast in an embrace: She was locked in his arms.
[18] to move (a ship) by means of a lock or locks, as in a canal (often followed by through, in, out, down, or up ).
[19] to furnish with locks, as a canal.
[20] to become locked: This door locks with a key.
[21] to become fastened, fixed, or interlocked: gears that lock into place.
[22] to go or pass by means of a lock or locks, as a vessel.
[23] to construct locks in waterways.
[24] lock in , to commit unalterably: to lock in the nomination of the party's candidates. (of an investor) to be unable or unwilling to sell or shift securities.
[25] lock off , to enclose (a waterway) with a lock.
[26] lock on , to track or follow a target or object automatically by radar or other electronic means.
[27] lock out , to keep out by or as if by a lock. to subject (employees) to a lockout.
[28] lock up , to imprison for a crime. Printing . to make (type) immovable in a chase by securing the quoins. to fasten or secure with a lock or locks. to lock the doors of a house, automobile, etc. to fasten or fix firmly, as by engaging parts.
[29] lock horns , to come into conflict; clash: to lock horns with a political opponent.
[30] lock, stock, and barrel , completely; entirely; including every part, item, or facet, no matter how small or insignificant: We bought the whole business, lock, stock, and barrel.
[31] under lock and key , securely locked up: The documents were under lock and key.
[32] a tress, curl, or ringlet of hair.
[33] locks, the hair of the head. short wool of inferior quality, as that obtained in small clumps from the legs.
[34] a small tuft or portion of wool, cotton, flax, etc.
[35] a device fitted to a gate, door, drawer, lid, etc, to keep it firmly closed and often to prevent access by unauthorized persons
[36] a similar device attached to a machine, vehicle, etc, to prevent use by unauthorized persons a steering lock
[37] a section of a canal or river that may be closed off by gates to control the water level and the raising and lowering of vessels that pass through it (as modifier ) a lock gate
[38] the jamming, fastening, or locking together of parts
[39] British the extent to which a vehicle's front wheels will turn to the right or left this car has a good lock
[40] a mechanism that detonates the charge of a gun
[41] US and Canadian informal a person or thing that is certain to win or to succeed she is a lock for the Academy Award
[42] lock, stock, and barrel completely; entirely
[43] any wrestling hold in which a wrestler seizes a part of his opponent's body and twists it or otherwise exerts pressure upon it
[44] Also called: lock forward rugby either of two players who make up the second line of the scrum and apply weight to the forwards in the front line
[45] a gas bubble in a hydraulic system or a liquid bubble in a pneumatic system that stops or interferes with the fluid flow in a pipe, capillary, etc an air lock
[46] to fasten (a door, gate, etc) or (of a door, etc) to become fastened with a lock, bolt, etc, so as to prevent entry or exit
[47] (tr) to secure (a building) by locking all doors, windows, etc
[48] to fix or become fixed together securely or inextricably
[49] to become or cause to become rigid or immovable the front wheels of the car locked
[50] (when tr, often passive) to clasp or entangle (someone or each other) in a struggle or embrace
[51] (tr) to furnish (a canal) with locks
[52] (tr) to move (a vessel) through a system of locks
[53] lock horns (esp of two equally matched opponents) to become engaged in argument or battle
[54] lock the stable door after the horse has bolted or lock the stable door after the horse has been stolen to take precautions after harm has been done
[55] a strand, curl, or cluster of hair
[56] a tuft or wisp of wool, cotton, etc
[57] (plural) mainly literary hair, esp when curly or fine

Words related to Lock

grip, latch, bolt, shut, engage, join, seal, press, close, clamp, bar, hook, fixture, clinch, fastening, grapple, connection, link, catch, junction

Words nearby Lock

lochiometra, lochiometritis, lochiorrhea, lochus, loci, lock, lock bay, lock horns, lock in, lock nut, lock on to

Origin of Lock

2before 900; Middle English locke, Old English locc lock of hair, cognate with Old Norse lokkr, Dutch lok curl, German Locke

Other words from Lock

lock·less , adjective
self-lock·ing , adjective
well-locked , adjective

Word origin for Lock

Old English loc; related to Old Frisian lok, Old Norse lokkr lock of wool

Synonyms for Lock

bolt, grip, latch, bar, bond, catch, clamp, clasp, clinch, connection, fastening, fixture, grapple, hasp, hook, junction, link, padlock