Definition of deck noun from the Oxford Advanced Learner's Dictionary

  1. 1the top outside floor of a ship or boat I was the only person on deck at that time of night. As the storm began, everyone disappeared below deck(s). See related entries: Parts of boats and ships
  2. 2one of the floors of a ship or a bus the upper/lower/main deck of a ship We sat on the top deck of the bus. My cabin is on deck C. see also double-decker, flight deck, single-decker See related entries: Train and bus travel
  3. 3(also deck of cards) (both especially North American English) (especially British English pack) a complete set of 52 playing cards
  4. 4a wooden floor that is built outside the back of a house where you can sit and relax See related entries: In the garden
  5. 5a part of a sound system that records and/or plays sounds on a disc or tape a cassette/tape deck
  6. Word Origin late Middle English: from Middle Dutch dec ‘covering, roof, cloak’, dekken ‘to cover’. Originally denoting canvas used to make a covering (especially on a ship), the term came to mean the covering itself, later denoting a solid surface serving as roof and floor.Extra examples The passengers were trapped below deck. We were sitting on the top deck of the bus. When we heard the alarm, we went up on deck. After dinner we sat out on the deck.Idioms
    all hands on deck(also all hands to the pump)
     
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    (saying, humorous) everyone helps or must help, especially in a difficult situation There are 30 people coming to dinner tonight, so it's all hands on deck.
    (informal) to prepare for an activity, event, etc. by removing anything that is not essential to it (informal) to fall to the ground
See the Oxford Advanced American Dictionary entry: deck