'Cottonweed' definitions:

Definition of 'cottonweed'

(from WordNet)
noun
An American everlasting having foliage with soft wooly hairs and corymbose heads with pearly white bracts [syn: pearly everlasting, cottonweed, Anaphalis margaritacea]
noun
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

Definition of 'Cottonweed'

From: GCIDE
  • Cottonweed \Cot"ton*weed`\ (-w[=e]d`), n. (Bot.) See Cudweed. [1913 Webster]