[Gastropoda: Pteropoda] (a) narrower whorls forming the centre of the shell and surrounded by the body whorl, usually including the protoconch whorls plus a few small teleoconch whorls (Limacina in oral view); (b) narrow whorls of the operculum.

[Gastropoda: Heteropoda] In heteropods, the spire is frequently used to distinguish between the large whorl(s) and the narrowly coiled central whorls.

Alternative form for Spire : spira.