|Noah Webster's Dictionary|
1. (p. pr. & vb. n.) of Darken.
2. (n.) Twilight; gloaming.
Darkening (2 Occurrences)
Job 38:2 Who 'is' this -- darkening counsel, By words without knowledge? (YLT)
Jeremiah 13:16 Give ye to Jehovah your God honour, Before He doth cause darkness, And before your feet stumble on dark mountains, And ye have waited for light, And He hath made it for death-shade, And hath appointed 'it' for thick darkness. (See NIV)