国書

Noun

 * 1) a diplomatic letter, a message sent by the head of state
 * 2) a piece of national literature; a literary work written in the national language, as opposed to a foreign language
 * 1) a piece of national literature; a literary work written in the national language, as opposed to a foreign language
 * 1) a piece of national literature; a literary work written in the national language, as opposed to a foreign language