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"
take a breath,
suspire,
respire,
breathe undergo the biomedical and metabolic processes of respiration by taking up oxygen and producing carbon monoxide
A yawn (from the Middle English yanen, an alteration of yonen or yenen, which in turn comes from the Old English geonian), is a reflex of simultaneous inhalation of air and stretching of the eardrums, followed by exhalation of breath. Pandiculation is the act of stretching and yawning simultaneously. Yawning is associated with tiredness, stress, overwork, lack of stimulation, and boredom.
OmegaWiki Dictionary
Ω
yawn To open the mouth widely and take a long, deep breath because of tiredness or boredom.
