|1.||any of several plants of the genus Erigeron, such as E. acer, having purplish tubular flower heads with orange centres: family Asteraceae (composites)|
|2.||any of several plants of the related genus Pulicaria, esp the Eurasian P. dysenterica, which has yellow daisy-like flower heads|
|3.||Canadian fleabane US name: horseweed a related plant, Conyza (or Erigeron) canadensis, with small white tubular flower heads|
|4.||any of various other plants reputed to ward off fleas|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a fool or simpleton; ninny.|
any of the plants of the genus Erigeron of the family Asteraceae, order Asterales, containing about 200 species of annual, biennial, and perennial herbs native primarily to temperate parts of the world. Some species are cultivated as rock garden or border ornamentals, especially E. alpinus, E. annuus, E. aurantiacus, E. karvinskianus, and E. speciosus.
Learn more about fleabane with a free trial on Britannica.com.