clock · noun C /klÉ‘k/
clock
A1 a piece of equipment that shows you what time it is, usually in a house or on a building and not worn by a person
Dictionary examples:
I could hear the clock ticking.
The town hall clock says 9 o'clock.
I think the kitchen clock is fast/slow.
The clock began to strike twelve.
Did you set the alarm clock?
Learner example:
I want to sell a clock that is ten years old. (Key English Test; A2; Italian)
around the clock
C1 all day and all night
Dictionary example:
Rescue teams are working around the clock to search for survivors of the earthquake.
Learner example:
It is undeniable that people are working around the clock in order to earn a living. (International English Language Testing System; C1; Chinese)