N-COUNT
（组织中的）主要人物，领袖
If you describe someone as the kingpin of an organization, you mean that they are the most important person involved in it.
例句
...one of the alleged kingpins of Colombia's largest drugs ring.
据称的哥伦比亚最大的贩毒集团的头目之一
...the Chicago crime kingpin.
芝加哥犯罪团伙的总头目