Turritella
Pronunciation : Tur`ri*tel"la
Part of Speech : n.
Etymology : [NL., dim fr. L. turris tower.] (Zo?l.)
Definition : Defn: Any spiral marine gastropod belonging to Turritella and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum.
Source : Webster's Unabridged Dictionary, 1913