fleawort
/ˈfliːwɜːt/noun
1- a Eurasian plant related to ragwort, reputed to drive away fleas桂根旋复花（可作驱蚤剂）。
1.1
- Genus Senecio, family Compositae: several species, in particular S. integrifolius.千里光属, 菊科：数种, 尤指缘叶千里光。