keep time
(of a watch or clock) to show the correct time

[TahlilGaran] Dictionary of Contemporary English ▲

keep time
1.
to stay even with a musical beat.
Many in the crowd swayed and kept time to the music by tapping their feet.

2.
to record how long something has taken.
When I go running I like to keep time on my watch.

[TahlilGaran] English Idioms Dictionary ▲

keep time
1. keep the beat, keep the same musical rhythm
It is difficult for the girl to keep time when she is playing in the band.

2. keep track of the time in a game or athletic contest
I kept time during the football game at our high school.

3. to keep accurate time (for a watch or clock)
My old watch will not keep time at all.

[TahlilGaran] English Idioms Dictionary ▲

keep time
v. phr.
1. To show the right time.
My watch has not kept good time since I dropped it.
2. To keep the beat; keep the same rhythm; keep in step.
Many people are surprised at how well deaf people keep time with the music when they dance.

[TahlilGaran] English Idioms Dictionary ▲