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

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

present participle of clock out

Alternative form of clockstar

A suburban village in the Metropolitan Borough of St Helens, Merseyside, England (OS grid ref SJ5291).

(dated, colloquial) Synonym of laughing kookaburra

(dated, informal) Synonym of laughing kookaburra

(dated, informal) Synonym of laughing kookaburra