water clock

2 definitions found

water clock - 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]

water clock - WordNet (r) 2.1 (2005) :

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