Boiar.

Definitions

  • Chambers's Twentieth Century Dictionary
    • Boiar. Same as Boyar.
    • ***

Usage

In literature:

The Boiars form an imperial council and rule in the Kremlin.
"Demetrius A Play" by Friedrich Schiller
The Russian Tsars found the German barons far more serviceable tools than the Russian boiars.
"German Problems and Personalities" by Charles Sarolea
***