bird’s-nest orchid

noun

1. 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
2. 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