
- LOCK Definition & Meaning - Merriam-Webster- 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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- LOCK Definition & Meaning | Dictionary.com- 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a door, gate, lid, drawer, or the like in position when closed, consisting of a bolt or system of bolts propelled and withdrawn by a mechanism operated by a … 
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- LOCK | definition in the Cambridge English Dictionary- 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 … 
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- Best Smart Locks of 2025: High-Tech Door Defenses - CNET- 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. 
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