manure

Short definition from Wiktionary

Verb

1. 1
   To cultivate by manual labor; to till; hence, to develop by culture.
2. 2
   To apply manure (as fertilizer or soil improver).

Noun

1. 1
   Animal excrement, especially that of common domestic farm animals and when used as fertilizer. Generally speaking, from cows, horses, sheep, pigs and chickens.
2. 2
   Any fertilizing substance, whether of animal origin or not; fertiliser.
3. 3
   Rubbish; nonsense; bullshit.