Spīr'ul-lă, n.
n. [Lat. dim. of spira, a spire.] [Zoöl.] A genus of cephalopods having a multilocular shell in the form of a flat spiral, the coils of which do not touch one another. P. Cyc.
n. [Lat. dim. of spira, a spire.] [Zoöl.] A genus of cephalopods having a multilocular shell in the form of a flat spiral, the coils of which do not touch one another. P. Cyc.