The Collaborative International Dictionary of English v.0.48:

Euryale \Eu*ry"a*le\, n. [NL., fr. Euryale, one of the Gorgons.]
   1. (Bot.) A genus of water lilies, growing in India and
      China. The only species (Euryale ferox) is very prickly
      on the peduncles and calyx. The rootstocks and seeds are
      used as food.
      [1913 Webster]

   2. (Zo["o]l.) A genus of ophiurans with much-branched arms.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Euryale
    n 1: (Greek mythology) one of the three Gorgons
    2: basket stars [syn: Euryale, genus Euryale]