gape

ot noun

1. An act of gaping; a yawn.
2. A large opening.
3. A disease in poultry caused by gapeworm in the windpipe, a symptom of which is frequent gaping.
4. The width of an opening.

fe’l verb

1. To open the mouth wide, especially involuntarily, as in a yawn, anger, or surprise.
2. To stare in wonder.
3. To open wide; to display a gap.
4. Of a cat: to open the passage to the vomeronasal organ, analogous to the flehming in other animals.