gall bladder

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun anatomy A pear-shaped organ that stores bile from the liver, until the body needs it for the digestion and absorption of fats in the duodenum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a muscular sac attached to the liver that stores bile (secreted by the liver) until it is needed for digestion