·noun A chasm, mouth, or passageway.
II. Yawn ·noun The act of opening wide, or of gaping.
III. Yawn ·vi To open the mouth, or to gape, through surprise or bewilderment.
IV. Yawn ·vi To open wide; to gape, as if to allow the entrance or exit of anything.
V. Yawn ·vi To be eager; to desire to swallow anything; to express desire by yawning; as, to yawn for fat livings.
VI. Yawn ·vi To open the mouth involuntarily through drowsiness, dullness, or fatigue; to Gape; to Oscitate.
VII. Yawn ·noun 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.