Definitions from Wiktionary ( )

▸ verb:  (intransitive) To open the mouth widely and take a long, rather deep breath, often because one is tired or bored, and sometimes accompanied by pandiculation.
▸ verb:  To say while yawning.
▸ verb:  To present a wide opening; gape.
▸ verb:  (obsolete) To open the mouth, or to gape, through surprise or bewilderment.
▸ verb:  (obsolete) To be eager; to desire to swallow anything; to express desire by yawning.
▸ noun:  The action of yawning; opening the mouth widely and taking a long, rather deep breath, often because one is tired or bored.
▸ noun:  (colloquial) A particularly boring event.
▸ noun:  A surname.

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