(telecommunications, electronics) Of a signal: able to be decoded without the need for a separate source of synchronization.

plural of star clock

Synonym of nocturnal (“device for telling time”)

A roasting jack powered by weights or springs.

plural of clock jack

To tick, buzz or become marked to indicate the passage of time.

plural of stop clock

A type of highly accurate atomic clock that is regulated by a resonance frequency of caesium atoms (the same frequency, 9,192,631,770 Hz, on which the precise scientific definition of the second is based).

(writing) A literary device in which the protagonist has a strict time limit, used to heighten tension. / Used other than figuratively or idiomatically: see tick, clock.

simple past tense and past participle of clock out