[{"Bold_text": "adjective", "List Items": ["of, pertaining to, characteristic of, or suitable or intended for young persons:juvenile books.", "young ; youthful :juvenile years.", "immature ; childish ; infantile :His juvenile tantrums are not in keeping with his age."]}, {"Bold_text": "noun", "List Items": ["a young person; youth .", "Theater.a youthful male or female role.an actor or actress who plays such parts.", "a youthful male or female role.", "an actor or actress who plays such parts.", "a book for children.", "Ornithology.a young bird that has its first set of contur feathers contur feathers.", "a two-year-old racehorse."]}]