shipworm Meaning, Definition & Usage

  1. noun wormlike marine bivalve that bores into wooden piers and ships by means of drill-like shells
    teredinid.

WordNet

Ship"worm` noun
Definitions
  1. (Zoöl.) Any long, slender, worm-shaped bivalve mollusk of Teredo and allied genera. The shipworms burrow in wood, and are destructive to wooden ships, piles of wharves, etc. See Teredo.

Webster 1913