天字号 tiānzìhào number one Definitions Defs Origin Strokes Stroke Words Sentences Sents tiānzìhào number one 天 tiān noun sky sky; heavens; the space above the earth字 zì noun character written character; symbol; script; word号 號 hào noun number number in a series; ordinal number; day of the monthtiānzìhào the best 天 tiān noun sky sky; heavens; the space above the earth字 zì noun character written character; symbol; script; word号 號 hào noun size size; model; grade; category