Meaning

noun gully or streambed in northern Africa and the Middle East that remains dry except during rainy season

originEtymology tree Arabic وَادِي, وَادٍ (wādī, wādin)bor. English wadi Borrowed from Arabic وَادِي, وَادٍ (wādī, wādin, “valley, riverbed, ravine”).

Etymology from Wiktionary, CC BY-SA 3.0