Meaning of さのう in Japanese

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Definition of さのう

さのう(sanou) 【左脳】

すなぶくろ(sunabukuro) · さのう(sanou) 【砂袋 ·砂嚢】

よめとおめかさのうち(yometoomekasanouchi) 【夜目遠目笠の内】

(exp) expression used to depict a woman who is attractive primarily when it's dark out, she's far away, or her face is partially hidden by a bamboo hat