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English definition of “clock”

clock

noun [C]     /klɒk/
TIME A1 a piece of equipment that shows you what time it is, usually in a house or on a building: She could hear the hall clock ticking. Watches and clocks
VEHICLE UK a piece of equipment in a vehicle for measuring how far it has travelled: The car has 63,000 kilometres on the clock. The interior of vehiclesWeighing and measuring
around/round the clock all day and all night: Rescue teams are working round the clock to search for survivors of the earthquake.Continually and repeatedly
race/work against the clock to do something as fast as you can in order to finish before a particular timeHurrying and doing things quicklyBusy and active
→ See also alarm clock, grandfather clock, turn/put the clock back
(Definition of clock noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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