Biker Gang
Motorcycle Gang, Japanese Bikers, Bosozoku
noun
ぼうそうぞく
暴走 (ぼうそう) Run Wild, Run Out Of Control
暴走族 (ぼうそうぞく) Biker Gang, Motorcycle Gang, Japanese Bikers, Bosozoku
暴力団 (ぼうりょくだん) Crime Syndicate, Yakuza, Gangster Organization
The Bosozoku 暴走族 Run Wild 暴走. "Wild" as in Out Of Control.