千入ちしおちしおMeanings1nounsoaking in dye many timesarchaicArchaic noun referring to the process of dyeing fabric by repeated immersion to achieve a deep color. Not used in modern Japanese.古こ文ぶん書しょには「千入ちしお」という染せん色しょく技ぎ法ほうが記しるされている。Ancient documents record a dyeing technique called 千入.