a marine gastropod mollusk (especially families Acmaeidae and Patellidae) that has a low conical shell broadly open beneath, browses over rocks or timbers in the littoral area, and clings very tightly when disturbed
limpet
noun(lim-pet)
one that clings tenaciously to someone or something
limpet
noun(lim-pet)
an explosive device designed to cling magnetically to a metallic surface (such as the hull of a ship)