"shipworm." YourDictionary, n.d. Web. 12 October 2018. <http://www.yourdictionary.com/shipworm>.
shipworm. (n.d.). Retrieved October 12th, 2018, from http://www.yourdictionary.com/shipworm
Any of various wormlike marine bivalve mollusks of the family Teredinidae, especially Teredo navalis, that have rudimentary shells with which they bore into wood, often doing extensive damage to ships and wharves. Also called teredo .