an object that shows the time. The object like a clock that you wear on your wrist is called a watch. Clocks either have a background called a face with hands that point to the hours and minutes, or they are digital clocks that show the time as a set of numbers. You say a clock is slow when it shows a time that is earlier than the correct time. You say it is fast when it shows a time that is later than the correct time the clock strikes one/five/eleven (o’clock):
The church clock struck 10 o’clock.
Synonyms and related words