*irrigate*

v. t. [ imp. & p. p. Irrigated p. pr. & vb. n. Irrigating ] [ L. irrigatus, p. p. of irrigare to irrigate: ir- in + rigare to water; prob. akin to E. rain. See Rain. ] [ 1913 Webster ]

1. To water; to wet; to moisten with running or dropping water; to bedew. [ 1913 Webster ]

2. (Agric.) To water, as land, by causing a stream to flow upon, over, or through it, as in artificial channels. [ 1913 Webster ]

3. (Med.) To rinse (a wound, infected area, etc.) with a flow or spray of a liquid. [ PJC ]