There are multiple definitions - click on the translation that matches your context.

adolescente em conflito com a lei

substantivo

full

juvenile delinquent

noun

Comparative law notes

Brazil

In Brazil, a young offender is a person aged between 12 and 18.

Definitions of juvenile delinquent

English

a young person who commits crimes, especially minor crimes (although the term is sometimes used to describe young people who commit serious crimes)

One of the arrested 17-year-olds was taken to an institution for juvenile delinquents, where he will stay until his April trial.