三さん盆ぼん白じろさんぼんじろMeanings1nountraditional high-grade white sugararchaicArchaic term for a refined white sugar, related to 三盆 (wasanbon). Used historically; modern contexts would use 和三盆 or other terms.See also: 三盆三さん盆ぼん白じろは、江え戸ど時じ代
