·noun A keyhole limpet. ·see Fissurella.
II. Limpet ·noun In a general sense, any hatshaped, or conical, gastropod shell.
III. Limpet ·noun Any species of Siphonaria, a genus of limpet-shaped Pulmonifera, living between tides, on rocks.
IV. Limpet ·noun Any one of many species of marine shellfish of the order Docoglossa, mostly found adhering to rocks, between tides.