deadbolt

Noun
  1. The part of a lock that is engaged or withdrawn with a key (synset 102869271)
    is a type of: bar - a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon
    subtypes: safety bolt, safety lock - a bolt that cannot be moved from outside the door or gate
    is a part of: lock - a fastener fitted to a door or drawer to keep it firmly closed
    same as: bolt

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