ratsbane

The farmer spread ratsbane in the barn to control the rodent population.

用法提示：ratsbane 作为名词，表示灭鼠药，在句中作宾语。

Old bottles of ratsbane were found stored in the shed, labeled with a skull and crossbones.

用法提示：ratsbane 作为不可数名词，指代灭鼠药这种物质。

The shopkeeper warned that ratsbane is highly toxic and must be kept away from children.

用法提示：ratsbane 作主语，表示这种毒药本身。