(1):
(v. i.) To open wide; to gape, as if to allow the entrance or exit of anything.
(2):
(v. i.) To open the mouth, or to gape, through surprise or bewilderment.
(3):
(n.) An involuntary act, excited by drowsiness, etc., consisting of a deep and long inspiration following several successive attempts at inspiration, the mouth, fauces, etc., being wide open.
(4):
(v. i.) To open the mouth involuntarily through drowsiness, dullness, or fatigue; to gape; to oscitate.
(5):
(n.) The act of opening wide, or of gaping.
(6):
(v. i.) To be eager; to desire to swallow anything; to express desire by yawning; as, to yawn for fat livings.
(7):
(n.) A chasm, mouth, or passageway.