Definition of dead noun from the Oxford Advanced American Dictionary

     

    dead

     noun
    noun
    NAmE//dɛd//
     
    the dead
     
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  1. 1 [plural] people who have died The dead and wounded in that one attack amounted to 6,000.
  2. 2[singular] the state of being dead Christians believe that God raised Jesus from the dead. (figurative) In nine years he has brought his party back from the dead almost to the brink of power.
  3. Idioms
    in the dead of night
     
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    in the quietest part of the night I crept out of bed in the dead of night and sneaked downstairs.
    in the dead of winter
     
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    in the coldest part of winter
See the Oxford Advanced Learner's Dictionary entry: dead