三合土 Traditional form: 三合土 Pinyin (reading): sānhétǔ Definitions: traditional Chinese building material made by mixing three components (typically lime, clay, and sand) Characters: 三 - three 合 - to combine, to join, to unite; to gather 土 - soil, earth; items made of earth Traditional characters: 三 - three 合 - to combine, to join, to unite; to gather 土 - soil, earth; items made of earth