[{"Bold_text": "noun", "List Items": ["any of a wide variety of variously shaped bread rolls, usually leavened and slightly sweetened or plain, sometimes containing spices, dried currants, etc.", "hair gathered into a round coil or knot at the nape of the neck or on top of the head in certain coiffures.", "buns,Slang.the buttocks."]}, {"Bold_text": "abbreviation for", "List Items": ["blood urea nitrogen:the concentration of nitrogen in the blood in the form of urea, indicating kidney function."]}]