The fear flowed everywhere, into Dunbar’s squadron, where Dunbar poked his head inquiringly through the entrance of the medical tent there one twilight and spoke respectfully to the blurred outline of Dr. Stubbs, who was sitting in the dense shadows inside before a bottle of whiskey and a bell jar filled with purified drinking water.
Abreast of his trailer, he left the ditch and wove his way speedily toward home through the dense underbrush, in which the only person he ever encountered was Captain Flume, who, drawn and ghostly, frightened him half to death one twilight by materializing without warning out of a patch of dewberry bushes to complain that Chief White Halfoat had threatened to slit his throat open from ear to ear.
There are no more uses of "twilight" in the book.
Show samples from other sources
It is a beautiful picture taken in twilight.
I awakened to a twilight sky, but did not know if the sun was setting or rising.