Synonym: gape, oscitance, oscitancy, yaw, yawning. Similar words: lawn, dawn, pawn, spawn, at dawn, fawning. Meaning: [jɔːn] 
n. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom. v. 1. utter a yawn, as from lack of oxygen or when one is tired 2. be wide open.
n. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom. v. 1. utter a yawn, as from lack of oxygen or when one is tired 2. be wide open. 
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61 We see another yawn, and our impulse is to follow suit.
62 The children with ASD were less likely to yawn contagiously than their typically developing peers, the researchers found.
63 "River pirates. " The cheesemonger gave a yawn, covering his mouth with the back of his hand. "Cockroach captains scurrying after crumbs. "
64 The world's fastest land animal takes a moment to relax with a yawn on Botswana's Okavango Delta.
65 And children with diagnoses that imply more severe autistic symptoms were much less likely to yawn contagiously than those with milder diagnoses.
66 In Alaska’s Denali National Park, a red fox opens wide for a yawn.
67 Scientists at Princeton University found a big yawn can regulate the temperature of the brain and prevent over-heating, Daily Mail reported.
68 So at last, with a sigh and a yawn, he gave it up.
69 It was an uninteresting conversation and I had to stifle a yawn.
70 Now a new study has found that most children aren't susceptible to contagious yawning until they're about 4 years old -- and that children with autism are less likely to yawn contagiously than others.
71 She let out a big yawn a full inch square in area.
72 All this media attention can tire a fellow out. Knut gives a big yawn.
73 The play was a big yawn from start to finish.
74 An Emory University research team decided to test that idea—with chimpanzees who also yawn contagiously.