| lock1 (lɒk) |
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| —n |
| 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. | a. 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 |
| | b. (as modifier): a lock gate |
| 4. | the jamming, fastening, or locking together of parts |
| 5. | (Brit) 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 (US), (Canadian) 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. | rugby Also called: lock forward 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 |
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| —vb |
| 12. | 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 |
| 13. | (tr) to secure (a building) by locking all doors, windows, etc |
| 14. | to fix or become fixed together securely or inextricably |
| 15. | to become or cause to become rigid or immovable: the front wheels of the car locked |
| 16. | (when tr, often passive) to clasp or entangle (someone or each other) in a struggle or embrace |
| 17. | (tr) to furnish (a canal) with locks |
| 18. | (tr) to move (a vessel) through a system of locks |
| 19. | lock horns (esp of two equally matched opponents) to become engaged in argument or battle |
| 20. | lock the stable door after the horse has bolted, lock the stable door after the horse has been stolen to take precautions after harm has been done |
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| [Old English loc; related to Old Norse lok] |
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| 'lockable1 |
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| —adj |