"fleabane" in the noun sense
1. fleabane, feabane mullet, Pulicaria dysenterica
hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas
2. fleabane
any of several North American plants of the genus Erigeron having daisylike flowers formerly believed to repel fleas
3. horseweed, Canadian fleabane, fleabane, Conyza canadensis, Erigeron canadensis
common North American weed with linear leaves and small discoid heads of yellowish flowers widely naturalized throughout temperate regions sometimes placed in genus Erigeron
Source: WordNet® (An amazing lexical database of English)
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