天穹 tiānqióng vault of heaven Origin Definitions Defs Strokes Stroke Words Sentences Sents tiānqióng vault of heaven 天 tiān noun sky sky; heavens; the space above the earth穹 qióng vault (bound form) vault; dome; an arched or rounded shape high in the middle and low at the edgestiānqióng lofty and vast 天 tiān noun sky sky; heavens; the space above the earth穹 qióng lofty (literary) high; lofty