dusk

n. state between light and darkness, twilight, nightfall

Dusk or civil dusk is the time at which the sun is 6 degrees below the horizon in the evening. At this time objects are distinguishable and some stars and planets are visible to the naked eye.Nautical dusk is when the sun is 12 degrees below the horizon in the evening. At this time, objects are no longer distinguishable, and the horizon is no longer visible to the naked eye.Astronomical dusk is the time at which the sun is 18 degrees below the horizon in the evening. At this time the sun no longer illuminates the sky, and thus no longer interferes with astronomical observations.
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Noun
1. the time of day immediately following sunset; "he loved the twilight"; "they finished before the fall of night"
(synonym) twilight, gloaming, nightfall, evenfall, fall, crepuscule, crepuscle
(hypernym) hour, time of day
(hyponym) night
(part-holonym) evening, eve, eventide

(v. t.)
To make dusk.
  

(v. i.)
To grow dusk.
  

(n.)
Imperfect obscurity; a middle degree between light and darkness; twilight; as, the dusk of the evening.
  

(n.)
A darkish color.
  

(a.)
Tending to darkness or blackness; moderately dark or black; dusky.
  

This is a dream of sadness; it portends an early decline and unrequited hopes. Dark outlook for trade and pursuits of any nature is prolonged by this dream.