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English definition of “cardinal”

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cardinal

noun [C]  /ˈkɑr·dən·əl/ us  

cardinal noun [C] (PRIEST)

a priest of high rank in the Roman Catholic Church

cardinal noun [C] (BIRD)

a North American bird, the male of which has bright red feathers and a black face

cardinal

adjective  /ˈkɑrd·ən·əl/ us  

cardinal adjective (IMPORTANT)

of great importance; main: Finding food was a cardinal concern.
(Definition of cardinal from the Cambridge Academic Content Dictionary © Cambridge University Press)
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