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seacock

[see-kok] /ˈsiˌkɒk/
noun, Nautical
1.
a valve in the hull of a vessel for admitting outside water into some part of the hull, as a ballast tank.
Also called sea connection.
Origin
1660-1670
1660-70; sea + cock1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for sea cock

seacock

/ˈsiːˌkɒk/
noun
1.
(nautical) a valve in the hull of a vessel below the water line for admitting sea water or for pumping out bilge water
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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3
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