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.

In more complex mechanical lock/key systems, two different keys, one of which is known as the master key, serve to open the lock. Common metals include brass, plated brass, nickel silver, …

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a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a …

Don't want to lock yourself in this way? They owners locked the door and kept watch when we went outside to throw out the garbage. There is a black and white, steel pad lock on it. In other …

4 days ago · Best smart locks of 2025 A simple way to upgrade your security system or add to your smart gadgets in the home is to invest in a smart lock. It allows you to keep track of who …

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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 …

Shop Best Buy for smart locks. Manage home security remotely from your phone with smart locksets. Find keypad door locks in stores & online for your entryways.

Oct 3, 2025 · Our new top pick is the Schlage Arrive Smart WiFi Deadbolt due to its combination of robust hardware, simple installation and controls, top-tier security, and overall reliability. The …