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.

LOCK definition: 1. a device that prevents something such as a door from being opened and can only be opened with a…. Learn more.

LOCK meaning: 1. a device that prevents something such as a door from being opened and can only be opened with a…. Learn more.

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.

A lock is a tool that keeps a room, house, drawer, or box securely closed. You generally need a key, password, or combination to open a lock.

LOCK meaning: 1 : a device that keeps something (such as a door, window, or box) from being opened and that is usually opened by using a key; 2 : an area in a canal or river that has gates at each end which are opened and closed to control the level of the water in different sections of the canal or river as boats move through it

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.

to fasten or secure (a door, window, building, etc.) by the operation of a lock or locks. to shut in a place fastened by a lock or locks, as for security or restraint. He locked the steering wheel on …