Meanings
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1
noun
A device that keeps a door, box, or gate shut and is opened with a key or code.
The lock was so stiff that the key would barely turn.
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2
verb
To fasten something with a lock.
Don't forget to lock the door when you leave.
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3
verb
To shut a person or thing somewhere so they cannot leave or be taken.
They locked the documents away in a safe.
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4
verb
To become fixed and unable to move.
His knees seemed to lock during the exercise.
Thesaurus
Common collocations
Etymology
From Middle English lok, from Old English loc, from Proto-West Germanic *lok, from Proto-Germanic *luką from Proto-Indo-European *lewg- (“to bend; turn”). Cognate with Cimbrian loch, lòch (“hole”), Dutch lok (“hole”), German Loch (“hole”), German Low German Lock (“hole”), Luxembourgish Lach (“hole”), Vilamovian łöch (“hole”), Yiddish לאָך (lokh, “hole”), Danish låg (“lid, cover”), Norwegian Bokmål lokk (“lid, cover”), Norwegian Nynorsk lok, lokk (“lid, cover”). more detail The verb is from Middle English locken, lokken, louken, from Old English lūcan, Proto-West Germanic *lūkan, from Proto-Ger…