'Cudweed' definitions:

Definition of 'cudweed'

noun

Any of numerous plants of the genus Gnaphalium having flowers that can be dried without loss of form or color

noun

Any plant of the genus Filago having capitate clusters of small woolly flower heads [syn: cotton rose, cudweed, filago]

noun

Perennial cottony-white herb of southwestern United States [syn: western mugwort, white sage, cudweed, prairie sage, Artemisia ludoviciana, Artemisia gnaphalodes]

From: GCIDE

Cudweed \Cud"weed`\ (k?d"w?d`), n. [Apparently fr. cud + weed, but perh. a corruption of cottonweed; or of cut weed, so called from its use as an application to cuts and chafings.] (Bot.) A small composite plant with cottony or silky stem and leaves, primarily a species of Gnaphalium, but the name is now given to many plants of different genera, as Filago, Antennaria, etc.; cottonweed. [1913 Webster]