Definitions For Yawn

An involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom
An act of opening your mouth wide while taking in breath : an act of yawning
Something that is very boring

Utter a yawn, as from lack of oxygen or when one is tired
Be wide open
To open your mouth wide while taking in breath usually because you are tired or bored
To be deep, large, etc.

Is Yawn a Scrabble Word?

Words With Friends YES

Scrabble US YES

Scrabble UK YES

English International (SOWPODS) YES

Scrabble Global YES

Enable1 Dictionary YES

Scrabble

Words with Friends

The word Yawn is worth 10 points in Scrabble and 10 points in Words with Friends

Students were yawning in class.
I tried to stifle a yawn.
As neither candidate was willing to make an unequivocal statement about anything, the debate proved to be a complete yawn