n. a major figure in organized crime. (Underworld.)
Mr. Big is not your typical kingpin. He likes to play the stock market, too.The drug kingpins are well protected.
kingpin
noun an indispensable leader US, 1867
kingpin
1. n. a major figure in organized crime. (Underworld. From the term for the front bowling pin in a triangular array of pins.) The drug kingpins are well protected.
2. n. a boss. My uncle is the kingpin in this organization.