Source : Webster's Revised Unabridged Dictionary (1913)

Xylophagous \Xy*loph"a*gous\, a. [Gr. ? eating wood; xy`lon wood
   + ? to eat.] (Zo["o]l.)
   (a) Eating, boring in, or destroying, wood; -- said
       especially of certain insect larv[ae], crustaceans, and
       mollusks.
   (b) Of or pertaining to the genus Xylophaga.