pluteus
  長腕幼蟲
  Plu·te·us n.; pl. L. Plutei E. Pluteuses   Zool. The free-swimming larva of sea urchins and ophiurans, having several long stiff processes inclosing calcareous rods.
  ◄ ►
  Pluteus
       n : a large genus of fungi belonging to the family Pluteaceae;
           the shape of the cap resembles a roof; often abundant
           early in the summer [syn: genus Pluteus, roof mushroom]