any plant belonging to the genus Cardamine, of the mustard family, having usually pinnate leaves and clusters of white, pink, or purple flowers.
Origin of bitter cress
First recorded in 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for bittercress
/ (ˈbɪtəˌkrɛs) /
one of several perennial or annual plants of the genus Cardamine, that are related to lady's-smock, including hairy bittercress (C. hirsuta), a common weed resembling shepherd's purse, with which it is often confused: family: Brassicaceae (crucifers)
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