Definition of Lock

1. Noun. A fastener fitted to a door or drawer to keep it firmly closed.

2. Verb. Fasten with a lock. "Lock the bike to the fence"
Generic synonyms: Fasten, Fix, Secure
Specialized synonyms: Padlock, Bolt
Also: Lock Up, Lock Up
Derivative terms: Locker
Antonyms: Unlock, Unlock

3. Noun. A strand or cluster of hair.
Exact synonyms: Curl, Ringlet, Whorl
Generic synonyms: Hair
Group relationships: Coif, Coiffure, Hair Style, Hairdo, Hairstyle
Specialized synonyms: Sausage Curl, Forelock, Crimp, Dreadlock
Derivative terms: Curl, Curly

4. Verb. Keep engaged. "Engaged the gears"
Exact synonyms: Engage, Mesh, Operate
Specialized synonyms: Flip, Switch, Throw, Ride
Generic synonyms: Displace, Move
Antonyms: Disengage
Derivative terms: Engagement, Mesh, Mesh, Meshing, Operation, Operation

5. Noun. A mechanism that detonates the charge of a gun.
Group relationships: Firearm, Piece, Small-arm
Generic synonyms: Mechanism

6. Verb. Become rigid or immoveable. "The therapist noticed that the patient's knees tended to lock in this exercise"
Generic synonyms: Engage
Antonyms: Unlock

7. Noun. Enclosure consisting of a section of canal that can be closed to control the water level; used to raise or lower vessels that pass through it.
Exact synonyms: Lock Chamber
Group relationships: Canal
Generic synonyms: Enclosure

8. Verb. Hold in a locking position. "He locked his hands around her neck"
Exact synonyms: Interlace, Interlock
Generic synonyms: Hold, Take Hold
Derivative terms: Interlock

9. Noun. A restraint incorporated into the ignition switch to prevent the use of a vehicle by persons who do not have the key.
Exact synonyms: Ignition Lock
Group relationships: Ignition Switch
Generic synonyms: Constraint, Restraint

10. Verb. Become engaged or intermeshed with one another. "They were locked in embrace"
Exact synonyms: Interlock
Generic synonyms: Bosom, Embrace, Hug, Squeeze
Derivative terms: Interlocking

11. Noun. Any wrestling hold in which some part of the opponent's body is twisted or pressured.
Generic synonyms: Wrestling Hold
Specialized synonyms: Hammerlock, Headlock

12. Verb. Hold fast (in a certain state). "He was locked in a laughing fit"

13. Verb. Place in a place where something cannot be removed or someone cannot escape. "She locked her jewels in the safe"
Exact synonyms: Lock Away, Lock In, Lock Up, Put Away, Shut Away, Shut Up
Generic synonyms: Confine
Derivative terms: Lockup

14. Verb. Pass by means through a lock in a waterway.
Generic synonyms: Go Across, Go Through, Pass
Derivative terms: Lockage, Lockage

15. Verb. Build locks in order to facilitate the navigation of vessels.
Generic synonyms: Build, Construct, Make
Derivative terms: Lockage

Definition of Lock

1. n. A tuft of hair; a flock or small quantity of wool, hay, or other like substance; a tress or ringlet of hair.

2. n. Anything that fastens; specifically, a fastening, as for a door, a lid, a trunk, a drawer, and the like, in which a bolt is moved by a key so as to hold or to release the thing fastened.

3. v. t. To fasten with a lock, or as with a lock; to make fast; to prevent free movement of; as, to lock a door, a carriage wheel, a river, etc.

4. v. i. To become fast, as by means of a lock or by interlacing; as, the door locks close.

Definition of Lock

1. Noun. Something used for fastening, which can only be opened with a key or combination. ¹

2. Noun. (computing by extension) A mutex or other token restricting access to a resource. ¹

3. Noun. A segment of a canal or other waterway enclosed by gates, used for raising and lowering boats between levels. ¹

4. Noun. The firing mechanism of a gun. ¹

5. Noun. Complete control over a situation. ¹

6. Noun. Something sure to be a success. ¹

7. Noun. (rugby) A player in the scrum behind the front row, usually the tallest members of the team. ¹

8. Noun. tuft or length of hair ¹

9. Verb. (intransitive) To become fastened in place. ¹

10. Verb. (transitive) To fasten with a lock. ¹

11. Verb. (intransitive) To be capable of becoming fastened in place. ¹

12. Verb. (transitive) To intertwine or dovetail. ¹

13. Verb. (intransitive break dancing) To freeze one's body or a part thereof in place. ¹

¹ Source:

Definition of Lock

1. to secure by means of a mechanical fastening device [v -ED, -ING, -S] : LOCKABLE [adj]

Medical Definition of Lock

1. 1. Anything that fastens; specifically, a fastening, as for a door, a lid, a trunk, a drawer, and the like, in which a bolt is moved by a key so as to hold or to release the thing fastened. 2. A fastening together or interlacing; a closing of one thing upon another; a state of being fixed or immovable. "Albemarle Street closed by a lock of carriages." (De Quincey) 3. A place from which egress is prevented, as by a lock. 4. The barrier or works which confine the water of a stream or canal. 5. An inclosure in a canal with gates at each end, used in raising or lowering boats as they pass from one level to another; called also lift lock. 6. That part or apparatus of a firearm by which the charge is exploded; as, a matchlock, flintlock, percussion lock, etc. 7. A device for keeping a wheel from turning. 8. A grapple in wrestling. Detector lock, a lock containing a contrivance for showing whether it as has been tampered with. Lock bay, a range of bond stone. Mortise lock, a door lock inserted in a mortise. Rim lock, a lock fastened to the face of a door, thus differing from a mortise lock. Origin: AS. Loc inclosure, an inclosed place, the fastening of a door, fr. Lucan to lock, fasten; akin to OS. Lukan (in comp), D. Luiken, OHG. Luhhan, Icel. Lka, Goth. Lukan (in comp); cf. Skr. Ruj to break. Cf. Locket. Source: Websters Dictionary (01 Mar 1998)

Lock Pictures

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Lexicographical Neighbors of Lock

lochia alba
lochia cruenta
lochia purulenta
lochia serosa
lock (current term)
lock, stock and barrel
lock-and-key model
lock-up option

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