עֲרָפֶל (ʻărâphelar-aw-fel'noun|masculinecloud)
[Heb] עֲרָפֶל ETCBC: עֲרָפֶל‎ (subs|darkness) OSHL: p.fq.ac TWOT: 1701b GK: H6906 Greek: γνόφος, θύελλα, νέφος, σκότος
Derivation: probably from עָרַף;
Strong's: gloom (as of a lowering sky)
KJV: (gross, thick) dark (cloud, -ness).