adj. & n.
adj. 1 a young, youthful. b of or for young persons. 2 suited to or characteristic of youth. 3 often derog. immature (behaving in a very juvenile way).
n. 1 a young person. 2 Commerce a book intended for young people. 3 an actor playing the part of a youthful person. juvenile court a court for the trial of children under 17. juvenile delinquency offences committed by a person or persons below the age of legal responsibility. juvenile delinquent such an offender. juvenilely adv. juvenility n.
[ L juvenilis f. juvenis young ]