dog's mercury
noun
1- a Eurasian plant of the spurge family, with hairy stems and small green flowers, widely found as a dominant plant of old woodland多年生山靛。
1.1
- Mercurialis perennis, family Euphorbiaceae.拉丁名Mercurialis perennis,大戟科。
词源
late 16th cent.: translating modern Latin Mercurialis canina (former taxonomic name); the plant is poisonous and is contrasted with Mercurialis annua 'annual mercury'， useful in medicine.