Found 2 items, similar to clepsydra.
English → English (WordNet) Definition: clepsydra clepsydra n : clock that measures time by the escape of water [syn: water clock , water glass] [also: clepsydrae (pl)]
English → English (gcide) Definition: Clepsydra Clepsydra \Clep"sy*dra\ (?; 277), n. [L. from Gr. ?; ? to steal, conceal + ? water.] 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. [1913 Webster] ||