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English definition of “yawn”

yawn

verb [I]  /jɔn/ us  
to open the mouth wide and take in and let out a deep breath without conscious effort, usually when you are tired or bored: She yawned, covering her mouth with her hand.
yawn
noun [C]  /jɔn/ us  
It had been an especially long day, she thought, barely stifling a yawn.
(Definition of yawn from the Cambridge Academic Content Dictionary © Cambridge University Press)
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