IRRIGATION
irrigation
(noun) (medicine) cleaning a wound or body organ by flushing or washing out with water or a medicated solution
irrigation
(noun) supplying dry land with water by means of ditches etc
Source: WordNet® 3.1
Etymology
Noun
irrigation (countable and uncountable, plural irrigations)
The act or process of irrigating, or the state of being irrigated; especially, the operation of causing water to flow over lands, for nourishing plants.
Source: Wiktionary
Ir`ri*ga"tion, n. Etym: [L. irrigatio: cf. F. irrigation.]
Definition: The act or process of irrigating, or the state of being
irrigated; especially, the operation of causing water to flow over
lands, for nourishing plants.
Source: Webster’s Unabridged Dictionary 1913 Edition