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water clock

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noun

a device, as a clepsydra, for measuring time by the flow of water.

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Origin of water clock

First recorded in 1595–1605
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for water clock

water clock

water glass


noun

any of various devices for measuring time that use the escape of water as the motive force
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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