clock
(n) : an instrument used to measure or keep track of time; a non-portable timepiece; the odometer of a motor vehicle
"this car has over 300,000 miles on the clock."
(v) : to measure the duration of; to measure the speed of
"he was clocked at 155 miles per hour."
synonyms: timepiece, odometer, time more», slug, smack, thump, whack, timekeeper, horologe