Breadcrumb Home > Thesaurus > R Synonyms of ratsbane Find synonyms for: Noun 1. arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic, ratsbane, trioxide usage: a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of ratsbane (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: deracinate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language