underworld

1. N-SING The underworld in a city is the organized crime there and the people who are involved in it. 黑社会

...a Spanish Harlem underworld of gangs, drugs and violence. …一个成群结帮、贩毒施暴的西班牙哈莱姆黑社会。

Some claim that she still has connections to the criminal underworld. 一些人声称她仍与犯罪的黑社会有联系。