Hypertext Webster Gateway: "shipworm"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Shipworm \Ship"worm`\, n. (Zo["o]l.)
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}.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Teredo \Te*re"do\, n.; pl. E. {Teredos}, L. {Teredines}. [L., a
worm that gnaws wood, clothes, etc.; akin to Gr. ?, L. terere
to rub.] (Zo["o]l.)
A genus of long, slender, wormlike bivalve mollusks which
bore into submerged wood, such as the piles of wharves,
bottoms of ships, etc.; -- called also {shipworm}. See
{Shipworm}. See Illust. in App.
From WordNet (r) 1.7 (wn)
shipworm
n : wormlike marine bivalve that bores into wooden piers and
ships by means of drill-like shells [syn: {teredinid}]
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