1. Hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas Noun
2. Any of several North American plants of the genus Erigeron having daisylike flowers; formerly believed to repel fleas Noun
3. Common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron Noun