clock on

US /klɑːk ɑːn/

UK /klɑːk ɑːn/

1.

to record one's arrival at work, especially by punching a time clock

:

•

I need to clock on by 9 AM to avoid being late.

•

He always clocks on exactly at 8 AM.

:

punch in sign in

:

clock off clock out

:

clock clock in alarm clock pendulum clock around the clock grandfather clock shot clock