from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A member of a class of higher Russian nobility that until the time of Peter I headed the civil and military administration of the country and participated in an early duma.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A rank of aristocracy (second only to princes) in Russia, Bulgaria and Romania.
from the GNU version of the Collaborative International Dictionary of English
- n. A member of a Russian aristocratic order abolished by Peter the Great. Also, one of a privileged class in Roumania.
from The Century Dictionary and Cyclopedia
- n. A personal title given to the highest class of Russian officials previous to the reign of Peter the Great.
From boiaren, from Russian boyarin, from Old Russian boljarin, from Turkic baylar, pl. of bay, rich, Turkish bay, rich, gentleman.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old East Slavic (boyare) ( > Russian бояре), plural of боярин, of uncertain origin. (Wiktionary)