snake·root (sn?k?ro?ot?, -ro?ot?)n. Any of various plants, such as black cohosh, rattlesnake master, sanicle, or wild ginger, having roots reputed to cure snakebite.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.snakeroot (?sne?k?ru?t) n1. (Plants) any of various North American plants, such as Aristolochia serpentaria (Virginia snakeroot) and Eupatorium urticaefolium (white snakeroot), the roots or rhizomes of which have been used as a remedy for snakebite2. (Plants) the rhizome or root of any such plant3. (Plants) another name for bistort1, bistort2 Also called: snakeweedCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014snake?root (?sne?k?rut, -?r?t) n. 1. any of various plants whose roots have been regarded as a remedy for snakebites. 2. the root or rhizome of such a plant. [1625?35] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.