bird's-nest orchid
noun
a brown parasitic Eurasian orchid, Neottia nidus-avis, whose thick fleshy roots resemble a bird's nest and contain a fungus on which the orchid feeds
a parasitic Eurasian plant, Monotropa hypopitys, whose thick fleshy roots resemble a bird's nest and contain a fungus on which the plant feeds: family Monotropaeceae