The meaning of LOCK is a fastening (as for a door) operated by a key or a combination. How to use lock in a sentence.

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Locksmiths use specialized tools and techniques to open your door in the case of lockouts or lost keys. Trained locksmiths can pick your door lock with lock-picking tools such as a rake, a tension wrench, …

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No lock is 100 percent foolproof, but the door lock you choose depends on what you want to secure. A latchbolt or deadbolt is a good choice for a door that already has a locking door knob for additional …

The lock on something such as a door or a drawer is the device which is used to keep it shut and prevent other people from opening it. Locks are opened with a key.

LOCK definition: 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a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a key, …

Apr 13, 2026 · lock (plural locks) Something used for fastening, which can only be opened with a key or combination. quotations