n.(违法犯罪团伙的)头目,首恶,元凶
'He's the cook ; and the ringleader, too.'
“ 他是船上的厨子, 也是那帮家伙的头目. ”
To catch bandits , first catch the ringleader.
擒贼先擒王.
He spilled it that Bill was their ringleader.
他透露比尔是他们的主谋.