any cress belonging to the genus Barbarea, of the mustard family, having lyrate leaves and yellow flowers.
Origin of winter cress
First recorded in 1540–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a bitter-tasting yellow-flowered perennial, Barbarea vulgaris, somewhat resembling mustard
a commercial hybrid, Rorippa × sterilis, between watercress and R. microphylla
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