/ Thesaurus / R Synonyms of rocket cress Find synonyms for: Noun1. yellow rocket, rockcress, rocket cress, Barbarea vulgaris, Sisymbrium barbarea, weedusage: noxious cress with yellow flowers; sometimes placed in genus SisymbriumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language