What does 浇灌 (jiāoguàn) mean in English?

Card 1289HSK Level 41289/3571
CARD1289
PROGRESS36%
浇灌
澆灌
jiāoguàn
irrigate(Verb)

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d