(intransitive) To end work; to officially record a time when one terminates a period of work. / (transitive) To officially record a work-termination time for.

(chemistry) Any mixture of compounds whose relative concentrations oscillate, and in which such change is marked by a visible rhythmic change in colour.

continually looking at the time to see how much longer one has to work or study

(idiomatic) nonstop, 24 hours per day.

(idiomatic) Alternative form of round-the-clock.

A variant of the game of darts in which players attempt to hit each section of the dartboard sequentially, from lowest to highest number.

A device for measuring time by letting water flow out of a container, usually through a tiny aperture. / A clepsydra.

The surface of a clock that contains the dial and hands.

Any timepiece that makes use of the piezoelectric property of a quartz crystal.

(military) A technique of timing the delivery of fires by placing all units on a common time. The synchronized clock uses a specific hour and minute based on either local or universal time. Local time is established using the local time zone.