intransitive verb. To open the mouth wide with a deep inhalation, usually involuntarily from drowsiness, fatigue, or boredom.

intransitive verb. To open wide; gape.

intransitive verb. To utter wearily, as while yawning.

noun. The act of yawning.

noun. One that provokes yawns; a bore.

noun. The act of gaping or opening wide.

noun. An involuntary opening of the mouth from drowsiness; oscitation. See yawning.

noun. An opening; a chasm.

To gape; open; stand wide.

Specifically

To open the mouth wide.

Involuntarily, as through drowsiness or dullness; gape; oscitate. Compare yawning.

To gape, as in hunger or thirst for something; hence, to be eager; long.

To be open-mouthed with surprise, bewilderment, etc.; be agape.

To open; form by opening.

To express or utter with a yawn.

intransitive verb. To open the mouth involuntarily through drowsiness, dullness, or fatigue; to gape; to oscitate.

intransitive verb. To open wide; to gape, as if to allow the entrance or exit of anything.

intransitive verb. To open the mouth, or to gape, through surprise or bewilderment.

intransitive verb. To be eager; to desire to swallow anything; to express desire by yawning.

noun. An involuntary act, excited by drowsiness, etc., consisting of a deep and long inspiration following several successive attempts at inspiration, the mouth, fauces, etc., being wide open.

noun. The act of opening wide, or of gaping.

noun. A chasm, mouth, or passageway.

verb. To open the mouth widely and take a long, rather deep breath, often because one is tired and sometimes accompanied by pandiculation.

verb. To present an opening that appears able to swallow one up, literally or metaphorically:

noun. The action of yawning; opening the mouth widely and taking a long, rather deep breath, often because one is tired.

noun. A particularly boring event.

verb. utter a yawn, as from lack of oxygen or when one is tired

verb. be wide open

noun. an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom

"Mark Lieberman, the CEO of TRA, a media marketing company, notices what he calls the yawn effect."

Technicolor yawn  multicolour yawn  

be  breathe  respire  suspire  take a breath  

Amon  Braun  Dawn  Mayon  Quinton  

bellow  chuckle  drawl  giggle  grunt  

aperture  boredom  broaching  cavity  chasm  

yawned  yawning  yawns