(historical) A small pendulum clock mounted on a wall bracket to allow room for its hanging weight. / A spring-driven clock, without hanging weights, constructed in the same style.

plural of bracket clock

(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).