日にち語ごにちごMeanings1nounJapanese (language)obsolete termObsolete term for the Japanese language; replaced by 日本語 in modern usage. Found in older texts or historical contexts.See also: 日本語明めい治じ時じ代だいの文ぶん献けんには「日にち語ご」という表ひょう記きが見みられる。The notation '日語' can be seen in documents from the Meiji period.