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


combination lock

BrE BrE//ˌkɒmbɪˈneɪʃn lɒk//
; NAmE NAmE//ˌkɑːmbɪˈneɪʃn lɑːk//
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a type of lock which can only be opened by using a particular series of numbers or letters
See the Oxford Advanced American Dictionary entry: combination lock