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Definition of Cotton grass
1. Noun. Any sedge of the genus Eriophorum; north temperate bog plants with tufted spikes.
Exact synonyms: Cotton Rush
Generic synonyms: Sedge
Group relationships: Eriophorum, Genus Eriophorum
Specialized synonyms: Common Cotton Grass, Eriophorum Angustifolium
Generic synonyms: Sedge
Group relationships: Eriophorum, Genus Eriophorum
Specialized synonyms: Common Cotton Grass, Eriophorum Angustifolium