noun. A herbicide, C₉H₁₀Cl₂N₂O₂, that is used to kill weeds selectively.

noun. The herbicide N'-(3,4-dichlorophenyl)-N-methoxy-N-methyl-urea

noun. a herbicide that kills weeds without harming vegetables

"Subsequent hand-weeding is usually carried out 2 months after planting and again after 5 months, but in Colombia the use of the herbicide linuron at the rate of 0.75 kg/ha has been found to give excellent control over broad-leaved weeds if applied 40-50 days after planting."

herbicide  weed killer  weedkiller