kingpin
king|pin /k'ɪŋpɪn/ (kingpins)
[N-COUNT] oft N of n, n N
If you describe someone as the kingpin of an organization, you mean that they are the most important person involved in it. (JOURNALISM)
...one of the alleged kingpins of Colombia's largest drugs ring.
= linchpin
[N-COUNT] oft N of n, n N
If you describe someone as the kingpin of an organization, you mean that they are the most important person involved in it. (JOURNALISM)
...one of the alleged kingpins of Colombia's largest drugs ring.
= linchpin