皇こう胤いんこういんじ字FuriganaMeanings1nounimperial descendant; imperial posterityarchaicArchaic term for a descendant of the imperial family. Not used in modern everyday Japanese; encountered mainly in historical or literary contexts.古こ文ぶん書しょには「皇こう胤いん」の語ごがしばしば見みられる。The word 皇胤 often appears in old documents.