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Lithodomus

(Science: zoology) a genus of elongated bivalve shells, allied to the mussels, and remarkable for their ability to bore holes for shelter, in solid limestone, shells, etc.

Synonym: Lithophagus.

These holes are at first very small and shallow, but are enlarged with the growth of the shell, sometimes becoming two or three inches deep and nearly an inch diameter.

Origin: NL. See Lithodome.