|1.||(intr) to open the mouth wide and take in air deeply, often as in involuntary reaction to tiredness, sleepiness, or boredom|
|2.||(tr) to express or utter while yawning|
|3.||(intr) to be open wide as if threatening to engulf (someone or something): the mine shaft yawned below|
|4.||the act or an instance of yawning|
|[Old English gionian; related to Old Saxon ginōn, Old High German ginēn to yawn, Old Norse gjā gap]|
v. yawned, yawn·ing, yawns
To open the mouth wide with a deep inhalation, usually involuntarily from drowsiness, fatigue, or boredom. n.
The act of yawning.