| Noun | 1. | tum - an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestioncraw, crop - a pouch in many birds and some lower animals that resembles a stomach for storage and preliminary maceration of food first stomach, rumen - the first compartment of the stomach of a ruminant; here food is collected and returned to the mouth as cud for chewing second stomach, reticulum - the second compartment of the stomach of a ruminant abomasum, fourth stomach - the fourth compartment of the stomach of a ruminant; the one where digestion takes place internal organ, viscus - a main organ that is situated inside the body arteria gastrica, gastric artery - the arteries that supply the walls of the stomach gastric vein, vena gastrica - one of several veins draining the stomach walls gastroepiploic vein, gastroomental vein, vena gastroomentalis - one of two veins serving the great curvature of the stomach epigastric fossa, pit of the stomach - a slight depression in the midline just below the sternum (where a blow can affect the solar plexus) alimentary canal, alimentary tract, digestive tract, digestive tube, gastrointestinal tract, GI tract - tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination |