n.1.(Zool.) A genus of marine bivalves closely allied to Teredo, and equally destructive to timber. One species (Xylotrya fimbriata) is very common on the Atlantic coast of the United States.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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There are several species of teredo in the genus Xylotrya. Despite the fact that their adult stage resembles a worm, they are actually molluscs.