fleabane (n.)hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas;
Synonyms: feabane mullet / Pulicaria dysenterica
fleabane (n.)any of several North American plants of the genus Erigeron having daisylike flowers; formerly believed to repel fleas;
fleabane (n.)common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron;
Synonyms: horseweed / Canadian fleabane / Conyza canadensis / Erigeron canadensis