Merriam-Webster's Collegiate® Dictionary, 11th Edition
STOMACH
I. noun
Etymology: Middle English stomak, from Anglo-French estomac, from Latin stomachus gullet, esophagus, stomach, from Greek stomachos, from stoma mouth; akin to Middle Breton staffn mouth, Avestan staman-
Date: 14th century
1. a. a dilatation of the alimentary canal of a vertebrate communicating anteriorly with the esophagus and posteriorly with the duodenum, one of the compartments of a ruminant stomach , a cavity in an invertebrate animal that is analogous to a stomach, the part of the body that contains the stomach ; belly , abdomen ,
2. desire for food caused by hunger ; appetite , inclination , desire ,
3. obsolete spirit , valor , pride , spleen , resentment ,
II. transitive verb
Date: 1523
to take offense at, to bear without overt reaction or resentment ; put up with