compost

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com·post / ˈkämˌpōst/ • n. decayed organic material used as a plant fertilizer. ∎  a mixture of this with loam and/or other ingredients, used as a growing medium.• v. [tr.] make (vegetable matter or manure) into compost: don't compost heavily infested plants. ∎  treat (soil) with compost.

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