Saxicava :: Saxicava (n.) Any species of marine bivalve shells of the genus Saxicava. Some of the species are noted for their power of boring holes in limestone and similar rocks.
Saxicavous :: Saxicavous (a.) Boring, or hollowing out, rocks; -- said of certain mollusks which live in holes which they burrow in rocks. See Illust. of Lithodomus..