灌漑 （カンガイ） irrigation

灌漑農業 （カンガイノウギョウ） irrigation farming

湯灌 （ユカン） washing a corpse for burial

注ぐ （そそぐ） to pour (into), to sprinkle on (from above), to water (e.g. plants), to pour onto, to spray, to shed (tears), to concentrate one's energy (strength, attention, etc.) on, to devote to, to fix (one's eyes) on, to flow into (e.g. of a river), to run into, to drain into, to fall (of rain, snow), to pour down