Noun fiddlehead has 2 senses
- ostrich fern, shuttlecock fern, fiddlehead, Matteuccia struthiopteris, Pteretis struthiopteris, Onoclea struthiopteris - tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes
--1 is a kind of fern
--1 is a member of Matteuccia, genus Matteuccia, Pteretis, genus Pteretis
- cinnamon fern, fiddlehead, fiddlehead fern, Osmunda cinnamonea - New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edible
--2 is a kind of flowering fern, osmund
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