半グレ

Noun

 * 1) a minor criminal, a semi-delinquent
 * 2) a gang of semi-delinquents
 * 1) a gang of semi-delinquents
 * 1) a gang of semi-delinquents

Usage notes
A 半グレ gang is often distinguished from. The latter are more strictly organized, and often considered more serious. The former may also be associated with, though not recognized as members of, a particular yakuza gang, or with a gang member.