/ Thesaurus / M Synonyms of malus sylvestris Find synonyms for: Noun1. wild crab, Malus sylvestris, wild apple, crab apple, crabappleusage: wild crab apple native to Europe; a chief ancestor of cultivated applesWordNet 3.0 Copyright 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abdicate Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language