Clepsydra [KLEP-si-drə]
Part of speech: noun
Origin: Latin, 17th century
1. An ancient time-measuring device worked by a flow of water.
Examples of clepsydra in a sentence
"One form of clepsydra marks passing time with water flowing into it, while another type keeps time by letting water flow out."
"The oldest evidence of a clepsydra dates back to the reign of Egypt’s Amenhotep III."
