サンドバスサンドバスMeanings1nounsand bathA bath or therapeutic treatment using heated sand; also used in laboratory contexts. The Japanese term 砂風呂 (すなぶろ) is a common synonym.See also: 砂風呂温おん泉せん地ちでサンドバスを体たい験けんした。I experienced a sand bath at the hot spring resort.