noun
thin India ink; diluted ink
Refers to ink that has been thinned with water, producing a lighter shade. Commonly used in calligraphy and painting.
薄墨で淡い線を描く。
Draw faint lines with diluted ink.
濃墨 is thick, dark ink, the opposite of 薄墨.
Compound of 薄 (usu, 'thin, light') and 墨 (sumi, 'ink').