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src: wikipedia
- Definition
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- yawn :an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
- he could not suppress a yawn|the yawning in the audience told him it was time to stop|he apologized for his oscitancy
- yawn :utter a yawn, as from lack of oxygen or when one is tired
- The child yawned during the long performance
- yawn :be wide open