What do a.m. and p.m. stand for?

main deck

noun, Nautical
the uppermost weatherproof deck, running the full length of a ship.
Origin of main deck
1740-50 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for main deck
  • Keg-size depth charges on the main deck look ready for deployment.
  • The main deck has ten hatches arranged in five pairs, and firewood is visible below deck within the forward holds.
  • It offers uninterrupted views from the open upper deck and a sheltered main deck for sightseeing.
  • The main deck of the catamaran is handicap-accessible.
  • Pedestrians and vehicles enter the ferry from either end of the main deck.
  • The ferry has two decks with the main deck being the entry deck.
  • The galley is through the door on the left, while the main deck is outside the door on the right.
  • The third jig is used to construct the main deck and then it is fitted on to the hull.
  • Ferries have enclosed cabins on the main deck and outdoor spaces near the rear or above the main deck.
  • The visitor center is wheelchair-accessible with ramps to the main deck and an elevator to the main observation deck.
British Dictionary definitions for main deck

main deck

the uppermost sheltered deck that runs the entire length 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
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