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 ]
[はるのななくさ, harunonanakusa] (exp) (See 秋の七草) seven vernal flowers (Java water dropwort, shepherd's purse, Jersey cudweed, common chickweed, Japanese nipplewort, turnip, and daikon)