Crime Syndicate, Yakuza, Gangster Organization
noun
A group that has power using violence? Sounds like a crime syndicate to me, probably the Yakuza or some other gangster organization .
ぼうりょくだん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
余計な事を言うようだけど、暴力団から足を洗った方がいいと思うよ。
Not that you asked me, but I think you should leave the yakuza.
父は私が暴力団に入ることを認めてくれないでしょう。
My dad will never approve of my joining a gangster organization.
暴力団と関東連合の違いは何ですか？
What’s the difference between the Yakuza and Kanto Rengo?