(of an opening or space) very large and wide

the yawning entrance of the cave

my headlights picked out what seemed to be a yawning chasm in the middle of the bridge

the yawning gap between rich and poor

the reflex action of opening the mouth wide and inhaling deeply due to tiredness or boredom

yawning is so contagious that we only need to read about it to want to yawn ourselves

involuntarily open one's mouth wide and inhale deeply, typically on account of tiredness or boredom

he began yawning and looking at his watch

(of an opening or space) be very large and wide

she started inching back from the abyss that yawned before her

the whole empty day yawned before me