国こく籍せき言げん語ご

noun

national language

Refers to a language officially associated with a nation, such as Japanese in Japan. Often used in legal, political, or sociolinguistic contexts.

• 日本にほんでは、国こく籍せき言げん語ごとして日本にほん語ごが使つかわれている。

  In Japan, Japanese is used as the national language.