[ir.ri.gate] vb -gat.ed ; -gat.ing [L irrigatus, pp. of irrigare, fr. in- + rigare to water; perh. akin to OHG regan rain--more at rain] vt (1615) 1: wet, moisten: as a: to supply (as land) with water by artificial means b: to flush (a body part) with a stream of liquid (as in removing a foreign body or medicating)
2: to refresh as if by watering ~ vi: to practice irrigation -- ir.ri.ga.tion n -- ir.ri.ga.tor n