Manure

Part of speech: noun (n.)

Any matter which makes land productive; a fertilizing substance, as the contents of stables and barnyards, dung, decaying animal or vegetable substances, etc. Dryden.

Part of speech: verb (v.)

1. To cultivate by manual labor; to till; hence, to develop by culture. [Obs.] To whom we gave the strand for to manure. Surrey. Manure thyself then; to thyself be improved; And with vain, outward things be no more moved. Donne.

2. To apply manure to; to enrich, as land, by the application of a fertilizing substance. The blood of English shall manure the ground. Shak.