noun
bile
BYLE/baɪl/
A liver-produced fluid that aids digestion of fats.
The liver produces bile that helps the body digest fats.

Etymology
Latin bilis denoted the liver's digestive fluid, so the English word preserves its concrete medical meaning. The deeper origin of the Latin word is uncertain.
In context
the liver's digestive function is to produce bile so bile is a yellow to green watery solution