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.

Secure your space with our top-rated locks. Find keyless entry door locks, weatherproof combination padlocks, and specialized locks for a variety of uses.

lock (something) in or lock in (something) : to do something that makes you sure to get (something that could change, such as a good price, an interest rate, etc.)

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

Solve many security issues with the right lock. A heavy-duty combination lock or a padlock can secure outdoor storage, fences, self-storage units or lockers, keeping your belongings safe.

Dec 20, 2025 · lock (plural locks) Something used for fastening, which can only be opened with a key or combination. quotations

Get free shipping on qualified Door Locks products or Buy Online Pick Up in Store today in the Hardware Department.

Master Lock is recognized around the world as the authentic, enduring name in locks, combination padlocks and security products. Learn more about our extensive assortment of security solutions.

Define lock. lock synonyms, lock pronunciation, lock translation, English dictionary definition of lock. n. 1. A device operated by a key, combination, or keycard and used, as on a door, for holding, closing, or …

From Business: In a jam? Call on the reliable and secure locksmith services of Cranberry Lock & Key, based in New Castle, Pennsylvania. We specialize in access control systems…