Definition of "Yawning" :
noun: an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
"The yawning in the audience told him it was time to stop."
adjective: showing lack of attention or boredom
"The yawning congregation."
adjective: gaping open as if threatening to engulf someone or something
"The yawning mine shaft."
adjective: with the mouth wide open indicating boredom or sleepiness
"A yawning congregation."