headman

noun2

1. •
   An executioner who beheads people.

   • My headman cast me in a blissful swoon, His axe cut off my cares from cumbered breast. — 2007
2. •
   (informal, rare) headmaster

   • But then Nash speaks to the school headman on Josie's behalf and persuades him to admit my youngest son. — 1995