All 4 Uses

twilight
in
City of Lost Souls
(Edited)

As the sky overhead darkened to the deep blue of late autumn twilight, lights began to go on—in tiny boutiques, in bars and restaurants that seemed to appear out of nowhere and disappear again into shadow as she and Jace passed, leaving light and laughter behind.
Chpt 10

twilight = the time of day between daylight and darkness
It's twilight here.
Chpt 12
But what I desire to know is this: When the twilight of the Nephilim comes, will the Courts stand with or against me?
Chpt 13 *

twilight = decline or fall
She woke twisted in her sheets, her hair a mass of tangles and the light outside the window dimmed to a twilight darkness.
Chpt 17 *

twilight = the light from the time of day between daylight and darkness

Definitions:

(1) (twilight as in: pink clouds in a twilight sky)
the time of day between daylight and darkness (just after sunset or just before sunrise); or the light from the sky at that time
(2) (twilight as in: the twilight of her career)
a condition of decline following successes
(3) (meaning too rare to warrant focus)
Much more rarely, twilight can refer to