gallbladder

/ˈɡɔlˌblædər/
noun
  1. A small organ located under the liver that stores bile, a fluid that helps digest fats.
    • Some people need surgery to remove their gallbladder if it becomes infected.
    • After eating a very fatty meal, his gallbladder caused him a lot of pain.
    • The doctor said her gallstones were blocking the duct from her gallbladder.