attain or register (a specified time, distance, or speed)

I clocked nearly nine hours of uninterrupted sleep

notice or watch

I noticed him clocking her in the mirror

hit (someone), especially on the head

someone clocked him for no good reason

wind back the milometer of (a car) illegally in order to make the vehicle appear to have travelled fewer miles than it really has

beware of motorists who clock their car before selling it

they had sold clocked vehicles