saxicavae

from The Collaborative International Dictionary of English v.0.48
Saxicava \Sax`i*ca"va\, n.; pl. E. {saxicavas}, L. {Saxicavae}.
   [NL. See {Saxicavous}.] (Zool.)
   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.
   [1913 Webster]
    

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