WordReference Random House Learner's Dictionary of American English © 2014
clock1 /klɑk/USA pronunciation
Timea relatively large instrument for telling time.
a meter for measuring and recording speed, etc.:The skier is racing against the clock.
[~ + object] to time, test, or determine by means of a clock or watch:The racehorse was clocked at two minutes thirty seconds.
clock in (or out), [no object] to begin (or end) the day's work, esp. by punching a time clock:What time did you clock in today?
around the clock, [uncountable]
- for the entire 24-hour day without pause:The factory shifts worked around the clock.
- without stopping for rest; tirelessly:working at this project around the clock.
Collins Concise English Dictionary © HarperCollins Publishers::
clock /klɒk/ n
- a timepiece, usually free-standing, hanging, or built into a tower, having mechanically or electrically driven pointers that move constantly over a dial showing the numbers of the hours
- any clocklike device for recording or measuring, such as a taximeter or pressure gauge
- the downy head of a dandelion that has gone to seed
- short for time clock
- around the clock, round the clock ⇒ all day and all night
- the clock ⇒
an informal word for speedometer, mileometer
a slang word for face
Etymology: 14th Century: from Middle Dutch clocke clock, from Medieval Latin clocca bell, ultimately of Celtic origin
- (transitive) Brit Austral NZ slang to strike, esp on the face or head
- (transitive) to record time as with a stopwatch, esp in the calculation of speed
clock /klɒk/ n
Etymology: 16th Century: from Middle Dutch clocke, from Medieval Latin clocca bell
- an ornamental design either woven in or embroidered on the side of a stocking
'clock' also found in these entries: