ratsbane

详细解释:n. 灭鼠药
【医】 毒鼠药(尤指白砷)

英语解释：

名词 ratsbane:

a white powdered poisonous trioxide of arsenic; used in manufacturing glass and as a pesticide (rat poison) and weed killer同义词：arsenic, arsenic trioxide, arsenous anhydride, arsenous oxide, white arsenic