Definitions
1.nounAn act of gaping; a yawn.
2.nounA large opening.
3.nounA disease in poultry caused by gapeworm in the windpipe, a symptom of which is frequent gaping.
4.nounThe width of an opening.
5.nounThe maximum opening of the mouth (of a bird, fish, etc.) when it is open.
6.verbTo open the mouth wide, especially involuntarily, as in a yawn, anger, or surprise.
7.verbTo stare in wonder.
8.verbTo open wide; to display a gap.
9.verbOf a cat: to open the passage to the vomeronasal organ, analogous to the flehming in other animals.