water caltrop

3 definitions found

water caltrop - Collaborative International Dictionary of English v.0.48 :

  Water caltrop \Wa"ter cal"trop\ (Bot.)
     The water chestnut.
     [1913 Webster]

  Water chestnut \Wa"ter chest"nut\ (Bot.)
     The fruit of Trapa natans and Trapa bicornis, Old World
     water plants bearing edible nutlike fruits armed with several
     hard and sharp points; also, the plant itself; -- called also
     water caltrop.
     [1913 Webster]

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

  water caltrop
      n 1: a variety of water chestnut [syn: water caltrop,
           Jesuits' nut, Trapa natans]