spirula Meaning, Definition & Usage

  1. noun a small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral
    Spirula peronii.

WordNet

Spir"u*la noun
Etymology
NL., dim. of L. spira a coil.
Definitions
  1. (Zoöl.) A genus of cephalopods having a multilocular, internal, siphunculated shell in the form of a flat spiral, the coils of which are not in contact.

Webster 1913