The term "biliary" refers to something related to or associated with the bile ducts, which are tubes that transport bile from the liver to the gallbladder and then into the small intestine. Bile is a fluid produced by the liver that helps in digestion and absorption of fats. The word "biliary" can also be used as an adjective to describe something related to or associated with bile, such as biliary colic (pain caused by obstruction of the bile ducts) or a biliary stent (a device placed in the bile duct to help drain bile).