- noun rotted vegetation or organic waster, which resembles humus and is used as fertiliser or mulch
- noun a prepared soil or peat mixture in which plants are grown in horticulture
- verb to allow organic material to rot and turn into compost
- verb to put compost onto soil or a particular area of ground
- A mixture of organic materials that have decomposed in a humus or earthen material. Used as a lightener and fertilizer when added to soil.