柯林斯词典weedkiller /ˈwiːdˌkɪlə/ (weedkillers) 1. N-MASS Weedkiller is a substance you put on your garden or lawn to kill weeds. 除草劑 返回 weedkiller剑桥词典a chemical used for killing weeds 除草劑,除莠劑 返回 weedkiller