杀草快 Traditional form: 殺草快 Pinyin (reading): shācǎokuài Definitions: diquat Characters: 杀 - to kill, to murder, to slaughter; to hurt 草 - grass, herbs; straw, thatch 快 - speedy, rapid, quick; soon Traditional characters: 殺 - to kill, to murder, to slaughter; to hurt 草 - grass, herbs; straw, thatch 快 - speedy, rapid, quick; soon