English

Definition of fifth noun from the Oxford Advanced Learner's Dictionary

  

fifth

 noun
noun
BrE BrE//fɪfθ//
 
; NAmE NAmE//fɪfθ//
 
 
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  •  each of five equal parts of something She cut the cake into fifths. He gave her a fifth of the total amount.
  • Idioms  (US English) to make use of the right to refuse to answer questions in court about a crime, because you may give information which will make it seem that you are guilty From the Fifth Amendment of the US Constitution, which guarantees this right.
    See the Oxford Advanced American Dictionary entry: fifth