marsh cress marshc·ress uncommon noun 1. annual or biennial cress growing in damp places sometimes used in salads or as a potherb; troublesome weed in some localities Synonymsmarsh cressyellow watercressRorippa islandica Related words Broader terms watercress Parts Rorippa WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
