bluet
/ˈbluːɪt/noun
1- a low-growing evergreen North American plant with milky-blue flowers矢车菊。
1.1
- Hedyotis (or Houstonia) caerulea, family Rubiaceae.拉丁名Hedyotis (或 Houstonia) caerulea, 茜草科。
词源
early 18th cent.: from French, diminutive of bleu 'blue'.