Meaning

verb supply with water, as with channels or ditches or streams

verb provide with water

verb secrete or form water, as tears or saliva

originFrom Middle English watered, watred, ywaterd, y-wattered, i-watred, i-watered, from Old English *wæterod, *ġewæterod, equivalent to water + -ed. Cognate with West Frisian wetterd, Dutch verwaterd, German bewässert.

Etymology from Wiktionary, CC BY-SA 3.0