rock borer
noun
1- any of a number of burrowing bivalve molluscs which bore into rock and other hard materials, in particular穿孔性贝类, 尤指：（钻岩石或其他硬物的）双壳类软体动物。
1.1
- mussel with a cigar shaped shell, occurring in warm seas (genus Lithophaga, family Mytilidae).钻石贝, 石蛏（石蛏属, 贻贝科）。
1.2
- a clam with an oval to oblong shell (genus Hiatella, family Hiatellidae).钻岩蛤（钻岩蛤属, 钻岩蛤科）。