1 [noncount] : the time when the sun appears above the horizon in the morning : dawn or daybreak
▪ We were up before/at sunrise. ▪ We worked from sunrise to sunset.2 : the colors that are in the sky when the sun slowly appears above the horizon [count] ▪ a beautiful sunrise ▪ We watched the sunrise from the beach. [noncount] ▪ the pink light of sunrise
▪ We were up before/at sunrise. ▪ We worked from sunrise to sunset.