The Collaborative International Dictionary
Saxicava
Saxicava \Sax`i*ca"va\, n.; pl. E. saxicavas, L. Saxicav[ae]. [NL. See Saxicavous.] (Zo["o]l.) 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.
Wiktionary
saxicava
n. (context zoology English) Any of the marine bivalve shells of the genus (taxlink Saxicava genus).