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witchweed

[wich-weed]
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noun
  1. an Old World parasitic plant of the genus Striga, introduced into the southern U.S.: a serious pest of corn and other grass crops.

Origin of witchweed

First recorded in 1900–05; witch + weed1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for witchweed

witchweed

noun
  1. any of several scrophulariaceous plants of the genus Striga, esp S. hermonthica, that are serious pests of grain crops in parts of Africa and Asia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012