Meaning of “clock” in the English Dictionary

"clock" in British English

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clocknoun

uk /klɒk/ us /klɑːk/

clock noun (TIME)

A1 [ C ] a device for measuring and showing time, usually found in or on a building and not worn by a person:

We have an antique clock on our mantelpiece.
The town-hall clock says (= shows that the time is) nine o'clock.
I think the kitchen clock is fast/slow (= is showing a later/earlier time than it should).
The clock began to strike twelve.
She set her clock (= put it to the right time) by the time signal on the radio.
turn the clocks back UK also put the clocks back, US also set the clocks back

to change the time on your clocks to an hour earlier, at an officially chosen time of year:

Don't forget to turn the clocks back tonight.
turn the clocks forward UK also put the clocks forward, US also set the clocks ahead

to change the time on your clocks to an hour later, at an officially chosen time of year

More examples

  • This alarm clock takes two medium-sized batteries.
  • The clock was striking ten as we went into the church.
  • The kitchen clock is wrong - it's actually 12.30 not 12.15.
  • Digital clocks don't really help children to learn about time and how to organize their time.
  • That clock is ten minutes slow.

clockverb [ T ]

uk /klɒk/ us /klɑːk/

(Definition of “clock” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"clock" in American English

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clocknoun [ C ]

us /klɑk/

a device for measuring and showing time, often placed on a surface or attached to a wall:

an alarm clock
The clock is about ten minutes fast/slow (= it shows a later/earlier time than it should).
Cleveland tied the game with five seconds on the clock (= still available).

clockverb [ T ]

us /klɑk/

to use an amount of time, esp. as measured by a clock:

She clocked the fastest time in practice runs for the women’s downhill skiing event.

(Definition of “clock” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"clock" in Business English

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clocknoun

uk /klɒk/ us
on the clock

informal WORKPLACE at work:

They are covered by the same medical and liability insurance that covers them when they're on the clock.

(Definition of “clock” from the Cambridge Business English Dictionary © Cambridge University Press)