Definition from Wiktionary, the free dictionary
- A contract killer; a professional assassin.
2000, James Carville, Stickin': The Case for Loyalty, page 13:
- I was called a "buffoon" in the paper of record, the New York Times, and the Washington Post described me fondly as "Clinton's gunsel," his button man
2000, Stuart Woods, Worst Fears Realized, page 177:
- "Twenty years ago, he was Little Pete Drago, a button man for the boys on Mulberry Street. He's probably got twenty notches on his piece
2005, Jeffery Deaver, Garden of Beasts: A Novel of Berlin 1936, page 44:
- But death is never symmetrical and tidy, and the button man had nothing to say.
professional assassin — see contract killer