An organ in the gastrointestinal tract of some animals, which contains dentition, that is used to grind food. The gnashing of the teeth/plates in the mill is also used by some of the creatures to create audible growling, as a form of communication.

An inflatable medical device temporarily placed in the stomach to aid weight loss.

plural of gastric balloon

A condition where ingested foods pass through the stomach very rapidly and enter the small intestine largely undigested.