[{"Bold_text": "noun", "List Items": ["a cardinal number, 20 plus 1.", "a symbol for this number, as 21 or XXI.", "a set of this many persons or things.", "Also21.Cards. blackjack(def1a) blackjack(def1a)."]}, {"Bold_text": "adjective", "List Items": ["amounting to 21 in number."]}]