Definition of teredo noun(plural teredos) Zoology - a wormlike
bivalve mollusk with reduced shells that it uses to drill into
wood. It can cause substantial damage to wooden structures and
vessels. Also called shipworm. - Genus Teredo, family
Teredinidae: several species, in particular T. navalis late
Middle English: via Latin from Greek terēdōn; related to teirein
'rub hard, wear away'