[{"Bold_text": "noun", "List Items": ["a cardinal number, 10 times 3.", "a symbol for this number, as 30 or XXX.", "a set of this many persons or things.", "Printing, Journalism. 30-dash .", "thirties,the numbers, years, degrees, or the like, from 30 through 39, as in referring to numbered streets, indicating the years of a lifetime or of a century, or referring to degrees of temperature:He works in the East Thirties. She must be in her thirties. The temperature was in the thirties yesterday."]}, {"Bold_text": "adjective", "List Items": ["amounting to 30 in number."]}]