Noah Webster
Yawn
YAWN, verb intransitive [G., Gr.]
1. To gape; to oscitate; to have the mouth open involuntarily through drowsiness or dullness.
The lazy, yawning drone.
And while above he spends his breath, the yawning audience nod beneath.
2. To open wide; as, wide yawns the gulf below.
3. To express desire by yawning; as, to yawn for fat livings.
YAWN, noun
1. A gaping; an involuntary opening of the mouth from drowsiness; oscitation.
One person yawning in company will produce a spontaneous yawn in all present.
2. An opening wide.