clep·sy·dra /ˈklɛpsədrə/
漏壺,水時鐘
Clep·sy·dra n. A water clock; a contrivance for measuring time by the graduated flow of a liquid, as of water, through a small aperture. See Illust. in Appendix.
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clepsydra
n : clock that measures time by the escape of water [syn: water
clock, water glass]
[also: clepsydrae (pl)]