Any sleep-inducing drug.
That induces sleep.
The action of yawning; opening the mouth widely and taking a long, rather deep breath, often because one is tired or bored.
A particularly boring event.
To present a wide opening; gape.
To say while yawning.
To open the mouth widely and take a long, rather deep breath, often because one is tired or bored, and sometimes accompanied by pandiculation.