Definition of deck noun from the Oxford Advanced American Dictionary

     

    deck

     noun
    noun
    NAmE//dɛk//
     
     
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  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).
  2. 2 one of the floors of a ship, bus, plane, or sports stadium the upper/lower/main deck of a ship We sat on the top deck of the bus. the upper deck of Yankee Stadium see also double-decker, flight deck
  3. 3(also deck of cards, pack) a complete set of 52 playing cards
  4. 4 a wooden floor that is built outside the back of a house where you can sit and relax
  5. 5a part of a sound system that records and/or plays sounds on a disk or tape a cassette/tape deck
  6. Idioms
    all hands on deck(saying)(humorous)
     
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    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.
    clear the decks(informal)
     
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    to prepare for an activity, event, etc. by removing anything that is not essential to it
    hit the deck/dirt/ground(informal)
     
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    to fall to the ground
    (in baseball) next in line to hit the ball One of their best batters is on deck.
See the Oxford Advanced Learner's Dictionary entry: deck