any animal or plant material used to fertilize land especially animal excreta usually with litter material
source: WordNet 3.0
Any matter which makes land productive; a fertilizing substance, as the contents of stables and barnyards, dung, decaying animal or vegetable substances, etc.
source: Webster 1913
verb
spread manure, as for fertilization
source: WordNet 3.0
To cultivate by manual labor; to till; hence, to develop by culture.
