水曜
すいよう · suiyou · JLPT N2 · noun
Wednesday
💧 水 = water + 曜 = weekday: Wednesday is the water day
Japanese weekdays follow the five elements. 水 (water) is paired with the planet Mercury, 水星, the water star. So 水曜 is the water-star day, Wednesday.
水 — pictograph of flowing water
水 is a pictograph depicting a stream of flowing water, with the central line representing the main current and the side strokes showing splashing droplets or ripples. In oracle bone script it was drawn even more clearly as a wavy vertical line with branches. It retains its original meaning of 'water' and also serves as a radical, often appearing in the compressed form 氵.