Origin: 1585–95; earlier boiaren < Russ boyárin, akin to OCS bolyarinŭ (translating Gk megistán man of high status), Bulg bolyár(in); of disputed orig.
1591, "member of a Rus. aristocratic class (abolished by Peter the Great)," from Rus. boyarin, perhaps from boji "struggle," or from O.Slav. root bol- "great."