Clepsydra (noun)
klep-sid-ra
An ancient device for measuring time by the regulated flow of water or mercury through a small aperture
First used in English between 1640–50. Latinized form of the Greek klepsýdra, from kléptein, “to steal, conceal” + hydra, “water.”
Example sentences
“Thre clepsydra timed the speeches, giving each man an equal amount of time to speak.”
