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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We stock a wide variety of locks for every purpose, builder's hardware, and the largest selection of key blanks in the area, including auto chip keys and blanks for rare and unique applications. …

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a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a …

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These smart locks make it easy to bring your door online and manage it from anywhere. After testing the best smart locks on the market, these are my favorites.