Lewis Short
(adjective) : irrĭgŭus (inr-), a, um, 1. in-riguus
* Supplied with water.
* Lit.
* Pass., watered, well-watered, irriguous; full of water, wet, swampy: herba,Plaut. Trin. 1, 1, 9: hortus,Hor. S. 2, 4, 16: pratum,Prop. 1, 20, 37: campus,Luc. 4, 296: loca,Cels. 1, 3: regio irrigua fontibus,Plin. 5, 14, 15, § 70 (al. rigua).
* Transf., poet.
* Permeating, pervading: somnus,Pers. 5, 56: sopor,Claud. Cons. Hon. 6 praef. 10.
* Corpus mero, soaked, Hor. S. 2, 1, 9; cf.: inrigatus multo venas nectare,Phaedr. 4, 14, 9.
* Carmen, music produced by the water-organ, Auct. Aetnae, 295.—As subst.: irrĭ-gŭa, ōrum, n. plur.
* Overflowings: aquarum,Plin. 5, 4, 3, § 23.
* Swamps, marshes, overflowed land: (Euphrates) distrahitur ad inrigua,Plin. 6, 26, 30, § 124.
Charlton T. Lewis, Charles Short, A Latin Dictionary