The belly, or that part of the body between the thorax and the pelvis, not including the back; or in some lower vertebrates, the portion between the cardiac and caudal regions.
The posterior section of the body, behind the thorax, in insects, crustaceans, and other Arthropoda.
The cavity of the belly, which is lined by the peritoneum, and contains the viscera; often restricted in humans to the part between the diaphragm and the commencement of the pelvis, the remainder being called the pelvic cavity.
The internal organs of a human or animal; especially viscera, intestines.
The inner workings of something; the insides or guts.