To stare in wonder.
To open wide; to display a gap.
To open the passage to the vomeronasal organ, analogous to the flehming in other animals.
To depict a dilated anal or vaginal cavity upon penetrative sexual activity.
To open the mouth wide, especially involuntarily, as in a yawn, anger, or surprise.
An act of gaping; a yawn.
A disease in poultry caused by gapeworm in the windpipe, a symptom of which is frequent gaping.
The width of an opening.
A large opening.
The maximum opening of the mouth (of a bird, fish, etc.) when it is open.
To look cheerful and joyous; to have an appearance suited to excite joy.
To have (a smile) on one's face.
To express by smiling.
To express amusement, pleasure, or love and kindness.
To be propitious or favourable; to countenance.
Favour; propitious regard.
A facial expression comprised by flexing the muscles of both ends of one's mouth, often showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement, goodwill, or anxiety.