Search Result for "water clock":
Wordnet 3.0

NOUN (1)

1. clock that measures time by the escape of water;
[syn: water clock, clepsydra, water glass]



The Collaborative International Dictionary of English v.0.48:

Water clock \Wa"ter clock`\
   An instrument or machine serving to measure time by the fall,
   or flow, of a certain quantity of water; a clepsydra.
   [1913 Webster]


WordNet (r) 3.0 (2006):

water clock
    n 1: clock that measures time by the escape of water [syn:
         water clock, clepsydra, water glass]