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Longman Dictionary of Contemporary English
egg-timer
noun
EXAMPLES FROM CORPUS
▪ Joyce's family is numbered with the grains of sand in a thousand egg-timers.
Douglas Harper's Etymology Dictionary
egg-timer

1873, from egg (n.) + timer.

Usage examples of "egg-timer".

If Doctor Pinero knows those symptoms, as he may, and were he to select as his victim one of their number, the man so selected would be likely to die on schedule, whether the distinguished speaker's mechanical egg-timer works or not.

There were a bare minimum of controls on the side of the machine—a knob that looked like it belonged on an egg-timer and a needle gauge under glass.