Origin: L, a worm that gnaws wood, clothes, etc.; akin to Gr, L. Terere to rub.

<zoology> A genus of long, slender, wormlike bivalve mollusks which bore into submerged wood, such as the piles of wharves, bottoms of ships, etc.; called also shipworm. See Shipworm.

(01 Mar 1998)