| 单词 | tormentil | 
| 释义 | tormentil(ˈtɔːməntɪl) noun a rosaceous downy perennial plant,  Potentilla erecta, of Europe and W Asia, having serrated leaves, four-petalled yellow flowers, and an astringent root used in medicine, tanning, and dyeing Also called: bloodroot Word originC15: from Old French tormentille, from Medieval Latin tormentilla, from Latin tormentum agony; referring to its use in relieving pain; see torment | 
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