A greenish-yellow fluid secreted by the liver and stored in the gallbladder. 

Bile plays an important role in the intestinal absorption of fats. Bile is secreted by the liver and contains cholesterol, bile salts and waste products such as bilirubin. Bile salts aid in the digestion of fats. Bile passes out of the liver via the bile duct where it is stored in the gallbladder and released in response to a fat-containing meal.

See the gallbladder and liver.