Definition of cardinal noun from the Oxford Advanced American Dictionary

     

    cardinal

     noun
    noun
    NAmE//ˈkɑrdnəl//
     
    , NAmE//ˈkɑrdn̩əl//
     
     
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  1. 1 a priest of the highest rank in the Roman Catholic Church. Cardinals elect and advise the pope Cardinal O'Connor
  2. 2a N. American bird. The male cardinal is bright red.
  3. 3 (also cardinal number) a number, such as 1, 2, and 3, used to show quantity rather than order compare ordinal
See the Oxford Advanced Learner's Dictionary entry: cardinal