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Any of several subspecies of a medium-sized African antelope (Damaliscus lunatus) having a dark reddish-brown coat with black patches and curved ridged horns, especially D. lunatus subsp. lunatus of southern Africa. Also called sassaby.
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.