compost heap

:  a mixture that consists largely of decayed organic matter and is used for fertilizing and conditioning land

:  mixture, compound

:  to convert (a material, such as plant debris) to compost

:  a collection of things thrown one on another :  pile

:  a great number or large quantity :  lot

:  to throw or lay in a heap :  pile or collect in great quantity

:  to form or round into a heap

:  to form a heap on :  load heavily