|n. pl.||1.||(Zool.) An extensive division of pectinibranchiate gastropods, including those that have a long retractile proboscis, with the mouth at the end, as the cones, whelks, tritons, and cowries. See Illust. of Gastropoda, and of Winkle.|
|2.||(Zool.) A subdivision of the tænioglossate gastropods, including the fig-shells (Pyrula), the helmet shells (Cassis), the tritons, and allied genera.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.