n.
A member of a people of southern European Russia and adjacent parts of Asia, noted as cavalrymen especially during czarist times.
[Russian kazak and Ukrainian kozak, both from South Turkic qazaq, adventurer. See Kazakh.]
Cossack Cos'sack' adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
