noun a chasm, mouth, or passageway.
2. yawn ·noun the act of opening wide, or of gaping.
3. yawn ·vi to open the mouth, or to gape, through surprise or bewilderment.
4. yawn ·vi to open wide; to gape, as if to allow the entrance or exit of anything.
5. yawn ·vi to be eager; to desire to swallow anything; to express desire by yawning; as, to yawn for fat livings.
6. yawn ·vi to open the mouth involuntarily through drowsiness, dullness, or fatigue; to gape; to oscitate.
7. 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.