| Noun | 1. | fiddlehead - tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumesMatteuccia struthiopteris, Onoclea struthiopteris, ostrich fern, Pteretis struthiopteris, shuttlecock fern fern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores genus Matteuccia, genus Pteretis, Matteuccia, Pteretis - small genus sometimes included in genus Onoclea; in some classifications both genera are placed in Polypodiaceae |
| 2. | fiddlehead - New World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green fronds; the early uncurling fronds are edibleosmund, flowering fern - any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters |