lock

¹

[ lok ]

noun

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a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, dial, etc.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)
   1. the mechanism that explodes the charge; gunlock.
   2. 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.

verb (used with object)

1. to fasten or secure (a door, window, building, etc.) by the operation of a lock or locks.
2. to shut in a place fastened by a lock or locks, as for security or restraint.
3. to make fast or immovable by or as if by a lock:

   He locked the steering wheel on his car.

4. to make fast or immovable, as by engaging parts:

   to lock the wheels of a wagon.

5. to join or unite firmly by interlinking or intertwining:

   to lock arms.

6. to hold fast in an embrace:

   She was locked in his arms.

7. to move (a ship) by means of a lock or locks, as in a canal (often followed by through, in, out, down, or up ).
8. to furnish with locks, as a canal.

verb (used without object)

1. to become locked:

   This door locks with a key.

2. to become fastened, fixed, or interlocked:

   gears that lock into place.

3. to go or pass by means of a lock or locks, as a vessel.
4. to construct locks in waterways.

verb phrase

1. 1. to keep out by or as if by a lock.
   2. to subject (employees) to a lockout.
2. 1. to commit unalterably:

      to lock in the nomination of the party's candidates.

   2. (of an investor) to be unable or unwilling to sell or shift securities.
3. 1. to imprison for a crime.
   2. Printing. to make (type) immovable in a chase by securing the quoins.
   3. to fasten or secure with a lock or locks.
   4. to lock the doors of a house, automobile, etc.
   5. to fasten or fix firmly, as by engaging parts.
4. 1. to track or follow a target or object automatically by radar or other electronic means.
   2. (in a video game) to target and then maintain the focus of the game camera and the player’s weapon on a selected character or item, though the player character and the targeted character may both be in motion.
5. to enclose (a waterway) with a lock.

lock

²

[ lok ]

noun

1. a tress, curl, or ringlet of hair.
2. locks,
   1. the hair of the head.
   2. short wool of inferior quality, as that obtained in small clumps from the legs.
3. a small tuft or portion of wool, cotton, flax, etc.

lock

¹

/ lɒk /

noun

1. a strand, curl, or cluster of hair
2. a tuft or wisp of wool, cotton, etc
3. literary.
   plural hair, esp when curly or fine

lock

²

/ lɒk /

noun

1. a device fitted to a gate, door, drawer, lid, etc, to keep it firmly closed and often to prevent access by unauthorized persons
2. a similar device attached to a machine, vehicle, etc, to prevent use by unauthorized persons

   a steering lock

3. 1. 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
   2. ( as modifier )

      a lock gate

4. the jamming, fastening, or locking together of parts
5. the extent to which a vehicle's front wheels will turn to the right or left

   this car has a good lock

6. a mechanism that detonates the charge of a gun
7. informal.
   a person or thing that is certain to win or to succeed

   she is a lock for the Academy Award

8. lock, stock, and barrel
   completely; entirely
9. any wrestling hold in which a wrestler seizes a part of his opponent's body and twists it or otherwise exerts pressure upon it
10. Also calledlock 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
11. 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

verb

1. 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
2. tr to secure (a building) by locking all doors, windows, etc
3. to fix or become fixed together securely or inextricably
4. to become or cause to become rigid or immovable

   the front wheels of the car locked

5. when tr, often passive to clasp or entangle (someone or each other) in a struggle or embrace
6. tr to furnish (a canal) with locks
7. tr to move (a vessel) through a system of locks
8. lock horns
   (esp of two equally matched opponents) to become engaged in argument or battle
9. 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

Derived Forms

• ˈlockable, adjective

Other Words From

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

Word History and Origins

Origin of lock¹

First recorded before 900; Middle English; Old English loc “fastening, bar”; cognate with Middle Low German lok, Old High German loh, Old Norse lok “a cover, lid,” Gothic -luk in usluk “opening”; akin to Old English lūcan “to shut”

Origin of lock²

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

Word History and Origins

Origin of lock¹

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

Origin of lock²

Old English loc; related to Old Norse lok

Idioms and Phrases

Idioms

1. lock and load,
   1. to load a gun with ammunition and prepare to fire:

      At twelve years old, I had to lock and load to protect the herd from cattle rustlers.

   2. to ready oneself for action:

      Lock and load, gamers! The tournament starts in ten!

2. lock horns, to come into conflict; clash:

   to lock horns with a political opponent.

3. 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.

4. under lock and key, securely locked up:

   The documents were under lock and key.

More idioms and phrases containing lock

• under lock and key

Example Sentences

They were eventually arrested after leaving Isabella's body in a locked bathroom and on Friday Jeff was convicted of her murder, while Gleason-Mitchell admitted charges relating to the death and child cruelty.

From BBC

Homeowners locked in to maintenance contracts have said they feel "trapped" by rising fees and poor service.

From BBC

Racing 92 lock Rowlands, 33, outlined the passion within the Wales squad to turn things around.

From BBC

A man has been found guilty of murdering a toddler whose body was left in a locked bathroom.

From BBC

The mall, across the street from City Hall in the Civic Center, was a wasteland, its walkways empty, the food court and most restaurants locked or boarded up.

From Los Angeles Times

Related Words

• bolt
• grip
• latch