From HomoExcelsior

1. To open the mouth wide; yawn. 2. gaze 3. The curtains gaped when the wind blew. 4. The act or an instance of gaping. 5. A large opening. 6. The width of the space between the open jaws or mandibles of a vertebrate. 7. A disease of birds, especially young domesticated chickens and turkeys, caused by gapeworms and resulting in obstructed breathing. 8. A fit of yawning.

---