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."