cottonweed

Noun cottonweed has 2 senses

• cottonweed(n = noun.plant) anaphalis margaritacea, pearly everlasting - an American everlasting having foliage with soft wooly hairs and corymbose heads with pearly white bracts;
is a kind of everlasting, everlasting flower
is a member of anaphalis, genus anaphalis

• cottonweed(n = noun.plant) - 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;
is a member of froelichia, genus froelichia
is a kind of herb, herbaceous plant