Definition Of lock


a mechanism for exploding the charge of a gun.

a mechanism for keeping a door, lid, etc., fastened, typically operated only by a key of a particular form.

the key turned firmly in the lock

a person or thing that is certain to succeed; a certainty.

Avion Black filled in nicely when Lewis was injured but is not a lock to succeed him.

a piece of a person's hair that coils or hangs together.

she pushed back a lock of hair

a short confined section of a canal or other waterway in which the water level can be changed by the use of gates and sluices, used for raising and lowering vessels between two gates.

It was nicknamed the Everest of canals because its 91 locks lifted boats 600 ft.

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Example Of lock

  • a bicycle lock

  • A flood bank separates canal and river, and the lock is in partial disrepair.

  • A protective husband beat a man to death with a steering lock in the belief that he had hurled a missile at his wife's car, a court heard.

  • a steering lock

  • a street closed by a lock of carriages

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