Tĕ-rē'do, n.

n. [Lat., a worm that gnaws wood, clothes, &c., Gr. τερηδών, from τείρειν, to rub, Lat. terere.] (Zoöl.) A genus of acephalous testaceous mollusks that bore and penetrate the bottom of ships, and other submersed wood; the ship-worm.