WordNet (r) 3.0 (2006):

cinnamon fern
    n 1: New World fern having woolly cinnamon-colored spore-bearing
         fronds in early spring later surrounded by green fronds;
         the early uncurling fronds are edible [syn: cinnamon
         fern, fiddlehead, fiddlehead fern, Osmunda
         cinnamonea]