compost
noun
[ ˈkɒmpɒst ]
• decayed organic material used as a fertilizer for growing plants.
• "cover with a layer of fine compost"
compost
verb
• make (vegetable matter or manure) into compost.
• "don't compost heavily infested plants"
Origin:
late Middle English: from Old French composte, from Latin composita, compositum ‘something put together’, feminine and neuter past participle of componere .