Source : Webster's Revised Unabridged Dictionary (1913)

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.