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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.
[Alteration (influenced by French boyard, from Russian boyarin) of Early Modern English boiaren, from Russian boyarin, from Old Russian bolyarinŭ, from Old Church Slavonic, probably from Bulgar Turkic (Turkic language of a Turkic tribe that settled in the Volga and Danube basins in the early Middle Ages ) *boyla er, noble man : boyla, Turkic nobleman of a rank below a khan (akin to Old Turkic boylā) + *er, man (akin to Turkish Old Turkic er).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Heraldry) a member of an old order of Russian nobility, ranking immediately below the princes: abolished by Peter the Great
[C16: from Old Russian boyarin, from Old Slavonic boljarinǔ, probably from Old Turkic boila a title]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
bo•yar(boʊˈyɑr, ˈbɔɪ ər)
also bo•yard(-ˈyɑrd, -ərd)
1. a member of the nobility of Russia, before Peter the Great.
2. a member of a former privileged class in Romania.
[1585–95; earlier boiaren < Russian boyárin]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.