to cover a distance in a particular time, or to reach a particular speed in a race:
Karen won in the 300 metres, clocking 42.9 seconds.
the first steam engine to clock 100 miles an hour
to measure or record the time or speed that someone or something is travelling at
clock somebody at/doing something
The police clocked him doing between 100 and 110 miles per hour.
3 British English informal
to notice someone or something, or to look at them carefully:
Did you clock the bloke by the door?
4 British English
to reduce the number of miles or kilometres shown on the instrument in a car that says how far it has gone, in order to sell the car for more money:
He knew the car had been clocked, but he couldn't prove it.
clock in/onphrasal verb
I clock on at 8:30.
clock offphrasal verb
to leave work at the end of the day:
What time do you clock off?
to record on a special card the time you stop or leave work:
By 6 p.m. most workers have clocked off.
clock outphrasal verb
clock up somethingphrasal verb
The Dodgers have clocked up six wins in a row.
I clocked up 90,000 miles in my Ford.
Councillor Scott has clocked up more than 25 years on the borough council.