穹きゅう蒼そうMeanings1noundome of the sky; vault of heavenformal or literaryFormal, literary term for the overarching sky or heavens, often with a poetic or classical feel. Rare in everyday speech.穹蒼きゅうその星々うのほしぼしが静しずかに輝かがやいていた。The stars in the vault of heaven shone quietly.