noun
young leader of henchmen; yakuza underboss
Refers specifically to the second-in-command or the leader of the younger members in a yakuza organization. Not used for ordinary corporate or social groups.
彼はその組の若頭にまで上り詰めた。
He rose to become the underboss of that yakuza group.
若頭が組長の代理で会合に出席した。
The young leader attended the meeting on behalf of the boss.