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"
utter a yawn, as from lack of oxygen or when one is tired; "The child yawned during the long performance"
admitting of no doubt or misunderstanding; having only one meaning or interpretation and leading to only one conclusion; "unequivocal evidence"; "took an unequivocal position"; "an unequivocal success"; "an unequivocal promise"; "an unequivocal (or univocal) statement"