|Origin:||twi- 'two, twice' (from Old English) + light|
the small amount of light in the sky as the day ends
in the twilight
The end of the cigarette glowed in the twilight.
the time when day is just starting to become night [= dusk]
romantic walks along the beach at twilight
the period just before the end of the most active part of someone's life
in the twilight of her acting career
Depression in the twilight years (=the last years of your life) is usually related to illness.