黑天 hēitiān night Origin Definitions Defs Strokes Stroke Words Sentences Sents 月黑天 yuèhēitiān moonless night a night with no moonlight; the dark黑天半夜 hēitiānbànyè late at night (idiom) in the middle of the night黑天摸地 hēitiānmōdì to grope in the dark (idiom) describes being in total darkness where it is impossible to see any direction; pitch-black