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shipworm

[ship-wurm] /ˈʃɪpˌwɜrm/
noun
1.
any of various wormlike marine bivalve mollusks that burrow into the timbers of ship, wharves, etc.
Origin
1770-1780
1770-80; ship1 + worm
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for ship worm

shipworm

/ˈʃɪpˌwɜːm/
noun
1.
any wormlike marine bivalve mollusc of the genus Teredo and related genera and family Teredinidae. They bore into wooden piers, ships, etc, by means of drill-like shell valves See also piddock
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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