teredo
noun
te·re·do tə-ˈrē-(ˌ)dō 
-ˈrā-
-ˈrā- plural teredos
: shipworm
Example Sentences
Recent Examples on the Web The warm waters of the Caribbean are paradise for teredo worms, which are actually mollusks with a voracious appetite for wood. 
Kristin Romey, National Geographic, 6 Oct. 2017
Kristin Romey, National Geographic, 6 Oct. 2017 Word History
Etymology
Middle English, from Latin teredin-, teredo, from Greek terēdōn; akin to Greek tetrainein to bore — more at throw entry 1
First Known Use
14th century, in the meaning defined above