Meaning of juvenile

ju•ve•nile

1. of, pertaining to, characteristic of, or suitable or intended for young persons: juvenile books.
2. young; youthful: juvenile years.
3. immature; childish; infantile: His juvenile tantrums are not in keeping with his age.

1. a young person; youth.
1. a youthful male or female role.
2. an actor or actress who plays such parts.
3. a book for children.
4. a young bird in the stage when it has fledged, if altricial, or has replaced down of hatching, if precocial.
5. a two-year-old racehorse.