combination lock

1. 1.

   lock that can be opened only by turning dials in a special sequence

   Broaderlock

Questions about combination lock

What does combination lock mean?

combination lock means "lock that can be opened only by turning dials in a special sequence".

Is combination lock a common word?

combination lock is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.