FERTILIZER
fertilizer, fertiliser, plant food
(noun) any substance such as manure or a mixture of nitrates used to make soil more fertile
Source: WordNet® 3.1
Etymology
Noun
fertilizer (countable and uncountable, plural fertilizers)
A natural substance that is used to make the ground more suitable for growing plants.
A chemical compound created to have the same effect.
Source: Wiktionary
Fer"ti*lizer, n.
1. One who fertilizes; the agent that carries the fertilizing
principle, as a moth to an orchid. A. R. Wallace.
2. That which renders fertile; a general name for commercial manures,
as guano, phosphate of lime, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition