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'tween deck

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noun Nautical.
  1. any space between two continuous decks in the hull of a vessel, as between a shelter deck and a freeboard deck.

Origin of 'tween deck

First recorded in 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for 'tween deck

'tween deck

'tween decks

noun
  1. nautical a space between two continuous decks of a vessel
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