A genus of carnivorous marine gastropods (family Naticidae) which burrow into the shells of bivalves. Also (in form natica): a gastropod of this genus; any gastropod of the family Naticidae with a calcareous operculum, a moon snail; (now rare).
Valid publication of the genus name: G. A. Scopoli Introductio Hist. Nat. (1777) 392.
Early 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From scientific Latin Natica, probably from post-classical Latin natica buttock, perhaps with allusion to the smooth, rounded shell typical of members of the genus.