'Fleabane' definitions:

Hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas [syn: fleabane, feabane mullet, Pulicaria dysenterica]

Any of several North American plants of the genus Erigeron having daisylike flowers; formerly believed to repel fleas

Common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron [syn: horseweed, Canadian fleabane, fleabane, Conyza canadensis, Erigeron canadensis]