mayweed
/ˈmeɪwiːd/noun
mass noun
1- a plant of the daisy family which typically grows as a weed of fields and waste ground雏菊, 母菊。
1.1
- Several species in the family Compositae, in particular stinking mayweed (Anthemis cotula) and scentless mayweed (Tripleurospermum inodorum).菊科中数种, 尤指臭春黄菊（拉丁名Anthemis cotula）和淡甘菊, 新疆三肋果（拉丁名Tripleurospermum inodorum）。
词源
mid 16th cent.: from maythe(n), an earlier name for this plant （in Old English mægethe, magothe）, + WEED.