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wild mustard

noun

any of several weedy plants belonging to the genus Brassica, of the mustard family, as charlock.

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Origin of wild mustard

First recorded in 1590–1600
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for wild mustard

wild mustard

noun

another name for charlock (def. 1)
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