a device used for measuring and indicating time, usually by means of pointers moving over a dial: clocks, unlike watches, are not meant to be worn or carried about
An instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.
A time clock.
A source of regularly occurring pulses used to measure the passage of time, as in a computer.
Any of various devices that indicate measurement, such as a speedometer or a taximeter.
A biological clock.
Botany The downy flower head of a dandelion that has gone to seed.