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king

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noun [countable] American English pronunciation: king /kɪŋ/ 
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singularking
pluralkings
  1. 1

    king

    or

    King

    a man who rules a country and is the senior male member of the royal family

    Oswald became king in 634.

    King George VI

  2. 2
    a man who is the best at doing a particular thing
    king of:

    Elvis, the king of rock and roll

    1. a.
      something that is considered to be the best of its type
      king of:

      Do you think that Mercedes is the king of luxury cars?

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