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deadbolt.

The part of the lock which is moved when the key is engaged.

8 characters2 syllables approx.English language

Meaning & usage

noun/ˈdɛdˌboʊ̯lt/General-American

  1. The part of the lock which is moved when the key is engaged.

  2. A kind of lock in which the bolt (moving portion) is held in position by the cylinder rather than by a spring and so cannot be retracted except by turning the cylinder.

Where this word comes from

Etymology tree English dead Proto-Indo-European *bʰeld- Proto-Indo-European *-os Proto-Indo-European *bʰóldos? Proto-Germanic *bultaz Proto-West Germanic *bolt Old English bolt Middle English bolt English bolt English deadbolt From dead + bolt.

verb/ˈdɛdˌboʊ̯lt/General-American

  1. To fasten or secure with a deadbolt.

    transitive
Where this word comes from

Etymology tree English dead Proto-Indo-European *bʰeld- Proto-Indo-European *-os Proto-Indo-European *bʰóldos? Proto-Germanic *bultaz Proto-West Germanic *bolt Old English bolt Middle English bolt English bolt English deadbolt From dead + bolt.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.