bittercress n 1: any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except Antarctic [syn: {bittercress}, {bitter cress}]
bittercress \bit"ter*cress\ n. any of various herbs of the genus Cardamine, having usually pinnate leaves and racemes of white, pink or purple flowers; cosmopolitan except in the Antarctic. Syn: bitter cress. [WordNet 1.5]