n.罪魁；头目
He spilled it that Bill was their ringleader. 他透露比尔是他们的主谋。
He is the ringleader in the prison raid. 他是聚众劫狱的首要分子。
The drug ringleader routed out a police informant. 贩毒集团的头目挖出了一个警察眼线。
