herbicide

noun
🔊/ˈhɜːbɪsaɪd/
🔊/ˈɜːrbɪsaɪd/, 🔊/ˈhɜːrbɪsaɪd/
[countable, uncountable]
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  1. a chemical that is poisonous to plants, used to kill plants that are growing where they are not wanted除莠剂;除草剂 see also insecticide, pesticide