Also found in: Thesaurus.


Any of various plants having cottony down, as some species of the genus Froelichia.


1. (Plants) a downy perennial plant, Otanthus maritimus, of European coastal regions, having small yellow flowers surrounded by large hairy bracts: family Asteraceae (composites)
2. (Plants) any of various similar plants


(ˈkɒt nˌwid)

any of various wild plants with a hoary down on the leaves and stems.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cottonweed - an American everlasting having foliage with soft wooly hairs and corymbose heads with pearly white bractscottonweed - an American everlasting having foliage with soft wooly hairs and corymbose heads with pearly white bracts
everlasting, everlasting flower - any of various plants of various genera of the family Compositae having flowers that can be dried without loss of form or color
Anaphalis, genus Anaphalis - a genus of herbs of north temperate regions having hoary leaves: pearly everlasting
2.cottonweed - any of various plants of the genus Froelichia found in sandy soils and on rocky slopes in warmer regions of America; grown for their spikes of woolly white flowers
Froelichia, genus Froelichia - genus of erect or procumbent herbs of the Americas having spikes of woolly white flowers: cottonweed
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
References in periodicals archive ?
In our work, we studied a wide variety of plants: clover, alfalfa, and corn grown under controlled conditions in a research greenhouse and grass and cottonweed from outside our laboratory.
The Company is currently pursuing final BLM approval of the Cottonweed Canyon Unit as well as preliminary approval of a like unit covering federal, fee and State of Arizona Trust Lands comprising approximately 154,831.
Within three years, the property was leveled and cleared of invasive blackberries, scotch broom and cottonweeds and a three-quarter-inch gravel base was put down to serve as a final grade.