Witch weed


an Old World parasitic plant of the genus Striga, introduced into the southern U.S.: a serious pest of corn and other grass crops.

1900–05; witch + weed1

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World English Dictionary
witchweed (ˈwɪtʃˌwiːd)
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

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