1
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 nouna twilight baseball game [=a game played at twilight]
We heard the birds chirping in the twilight hours.
2
: a period when something is ending
He's in the twilight of his career. [=the last part of his career]
—often used before another nounHe became less radical in his twilight years.
Cite this Entry
“Twilight.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/twilight. Accessed 14 Nov. 2026.
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