twi·light 
/ˈtwaɪˌlaɪt/ noun
/ˈtwaɪˌlaɪt/ noun 1 [noncount] a : the light from the sky at the end of the day when night is just beginning
▪ The sun set and twilight fell. ▪ in the autumn twilight
b : the period when day is ending and night is beginning
▪ We had to stop working at twilight. [=dusk] — often used before another noun ▪ a twilight baseball game [=a game played at twilight] ▪ We heard the birds chirping in the twilight hours. 2 [singular] : a period when something is ending
▪ He's in the twilight of his career. [=the last part of his career] — often used before another noun ▪ He became less radical in his twilight years.
▪ The sun set and twilight fell. ▪ in the autumn twilight
b : the period when day is ending and night is beginning
▪ We had to stop working at twilight. [=dusk] — often used before another noun ▪ a twilight baseball game [=a game played at twilight] ▪ We heard the birds chirping in the twilight hours.
▪ He's in the twilight of his career. [=the last part of his career] — often used before another noun ▪ He became less radical in his twilight years.
