What does enter the combination mean?
enter the combination
Definition
To turn the dial of a safe, or press its keys, to the numbers of its code so that it opens.
Example sentences
I've entered the combination three times and the safe still won't open.
I've entered the combination three times and the safe still won't open.
What good's a fireproof safe if the only guy who could enter the combination has retired?
What good's a fireproof safe if the only guy who could enter the combination has retired?