天球 tiānqiú celestial sphere Origin Definitions Defs Strokes Stroke Words Sentences Sents tiānqiú celestial sphere 天 tiān noun sky sky; heavens; the space above the earth球 qiú noun sphere (math) solid geometric figure where every point on the surface is equidistant from the centertiānqiú ancient jade · ancient zither 天 tiān noun sky sky; heavens; the space above the earth球 qiú fine jade (archaic) type of fine jade; jade percussion instrument