[clep.sy.dra] n, pl -dras or -drae [L, fr. Gk klepsydra, fr. kleptein to steal + hydor water--more at klept-, water] (1646): water clock
CLEPSYDRA
Meaning of CLEPSYDRA in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012