- a pot, especially an earthen pot for holding water, cooking, etc.
- a stew.
"At the bottom of the box was something heavy which, unwrapped, turned out to be a water jar with something in Spanish written across it...
"There it sits, over on my window sill, ninety-odd years later, without even a nick out of it. The fan and parasol went quickly, the mat lasted until Leadville and was mourned when it passed, the olla has come through three generations of us, as have the bowie, the spurs, and the six-shooter."
- Wallace Stegner, Angle of Repose