/ Thesaurus / O Synonyms of osmunda cinnamonea Find synonyms for: Noun1. cinnamon fern, fiddlehead, fiddlehead fern, Osmunda cinnamonea, flowering fern, osmundusage: New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edibleWordNet 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