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The Collaborative International Dictionary of English v.0.48 (gcide)

Twilight \Twi"light`\, n. [OE. twilight, AS. twi- (see {Twice})
le['o]ht light; hence the sense of doubtful or half light;
cf. LG. twelecht, G. zwielicht. See {Light}.]
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1. The light perceived before the rising, and after the
setting, of the sun, or when the sun is less than 18[deg]
below the horizon, occasioned by the illumination of the
earth's atmosphere by the direct rays of the sun and their
reflection on the earth.
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2. faint light; a dubious or uncertain medium through which
anything is viewed.
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As when the sun . . . from behind the moon,
In dim eclipse, disastrous twilight sheds. --Milton.
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The twilight of probability. --Locke.
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Twilight \Twi"light`\, a.
1. Seen or done by twilight. --Milton.
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2. Imperfectly illuminated; shaded; obscure.
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O'er the twilight groves and dusky caves. --Pope.
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