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[koh-ming] /ˈkoʊ mɪŋ/
a raised border around an opening in a deck, roof, or floor, designed to prevent water from running below.
Origin of coaming
1605-15; earlier coming, apparently equivalent to comb1 (in the sense of ‘crest’) + -ing1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for coaming
  • He tripped over a coaming and struck his head on a vent pipe.
  • Overfilling can be prevented by filling the barge only to the bottom of the barge coaming.
  • He knew of the risk of shock, so he stood on the coaming around the door opening before reaching for the welding machine.
  • The pontoon came to rest partly on the winch and partly on the hatch coaming.
British Dictionary definitions for coaming


a raised frame around the cockpit or hatchway of a vessel for keeping out water
Word Origin
C17: of unknown origin
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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Word Origin and History for coaming

1610s, nautical, of unknown origin.

Online Etymology Dictionary, © 2010 Douglas Harper
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