Meaning of “mortise lock” in the English Dictionary

british dictionary

"mortise lock" in British English

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mortise locknoun [ C ]

also mortice lock uk /ˈmɔː.tɪs ˌlɒk/ us /ˈmɔːr.t̬ɪs ˌlɑːk/

a lock that is inside the edge of a door, so that it cannot be seen or removed when the door is closed

(Definition of “mortise lock” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)