Pluteus
Pronunciation : Plu"te*us, n.; pl. L. Plutei
Part of Speech : E.
Etymology : [L., a shed.] (Zo?l.)
Definition : Defn: The free-swimming larva of sea urchins and ophiurans, having several long stiff processes inclosing calcareous rods.
Pluteuses.
Source : Webster's Unabridged Dictionary, 1913