0 a small lock that is opened using a set of numbers or letters put in a particular order, usually by turning wheels with numbers on them or by pressing keys:
The briefcase had a combination lock.
Evidence is kept behind a steel door secured by a combination lock.
Case files are kept at police headquarters behind two sets of doors, with the outer doors secured with a combination lock.
He laid the suitcase on the bed, turned the combination locks and lifted the lid.
Someone had fitted a combination lock to the back gate.
He punched the keypad on the combination lock and the heavy door swung open.
The front door key is kept in a keysafe with a combination lock.
