/ Thesaurus / G Synonyms of ghost weed Find synonyms for: Noun1. snow-on-the-mountain, snow-in-summer, ghost weed, Euphorbia marginata, spurgeusage: annual spurge of western United States having showy white-bracted flower clusters and very poisonous milkWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language