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

combination lock

noun

/ˌkɒmbɪˈneɪʃn lɒk/

/ˌkɑːmbɪˈneɪʃn lɑːk/

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a type of lock that can only be opened by using a particular series of numbers or letters

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See combination lock in the Oxford Advanced American Dictionary

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