A lock that is opened by rotating a dial or set of dials, marked with letters or numbers, through a specific sequence.
- I twirled the combination lock and opened my locker.
- He turned the combination lock on one and opened the door, revealing a stack of books and notebooks, with dozens of papers mixed within.
- She arrived at her locker, expertly opening her combination lock and then unpacking her backpack with the many textbooks it held.
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Syllabification: com·bi·na·tion lock
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