What does "omentum" mean?

Omentum: A free fold of the peritoneum, or one serving to connect viscera, support blood vessels, etc.; an epiploön. Note: The great, or gastrocolic, omentum forms, in most mammals, a great sac, which is attached to the stomach and transverse colon, is loaded with fat, and covers more or less of the intestines; the caul. The lesser, or gastrohepatic, omentum connects the stomach and liver and contains the hepatic vessels. The gastrosplenic omentum, or ligament, connects the stomach and spleen.