色いろ砂すな

noun

coloured sand (for plaster walls)

Specifically refers to sand mixed with pigment, traditionally used for coating interior plaster walls (砂壁).

See also: 砂壁

• この和わ室しつの砂すな壁かべには色いろ砂すなが使つかわれている。

  Coloured sand is used in the plaster walls of this Japanese-style room.