Spirula

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Spirula \Spir"u*la\, n. [NL., dim. of L. spira a coil.] (Zool.)
     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.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  spirula
       n : a small tropical cephalopod of the genus Spirula having
           prominent eyes and short arms and a many-chambered shell
           coiled in a flat spiral [syn: {Spirula peronii}]