万斛泉源 wànhúquányuán inexhaustible spring Origin Definitions Defs Strokes Stroke Words Sentences Sents 万 萬 wàn numeral ten thousand the number 10,000斛 hú hu (unit of volume) ancient unit of dry measure or measure word for grain; historically ten 斗 dǒu, later five 斗 dǒu泉源 quányuán springhead The source of a spring or stream; fountainhead.