definition of
yawn

[1] #1 yawn v. utter a yawn, as from lack of oxygen or when one is tired; "The child yawned during the long performance". wn

[2] #2 yawn n. [yawning, oscitance, oscitancy] 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". wn

[3] #3 yawn v. [gape, yaw] be wide open; "the deep gaping canyon". wn