[{"Bold_text": "noun", "List Items": ["a cardinal number, ten times five.", "a symbol for this number, as 50 or L.", "a set of this many persons or things.", "fifties,the numbers, years, degrees, or the like, from 50 through 59, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature:She lives in the East Fifties. He's in his late fifties. It's going to be in the fifties again today.", "Informal.a fifty-dollar bill:He had a fifty and two tens in his wallet."]}, {"Bold_text": "adjective", "List Items": ["amounting to 50 in number."]}]