/ Thesaurus / O Synonyms of orange grass Find synonyms for: Noun1. orange grass, nitweed, pineweed, pine-weed, Hypericum gentianoides, St John's wortusage: annual wiry-stemmed North American weed with minute scalelike leaves and small yellow flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language