English

Definition of mortise lock noun from the Oxford Advanced Learner's Dictionary

 

mortise lock

 noun
noun
BrE BrE//ˈmɔːtɪs lɒk//
 
; NAmE NAmE//ˈmɔːrtɪs lɑːk//
 
 
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a lock that is fitted inside a hole cut into the edge of a door, not one that is screwed into the surface of one side
See the Oxford Advanced American Dictionary entry: mortise lock