Strong's G4656 · Greek

σκοτόω

skotoo · skot-o'-o

from 4655; to obscure or blind (literally or figuratively)

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 3 σκοτόω , -ῶ ( σκότος ), [in LXX for חשׁךְ , קדר , שׁחר ;] to darken : Re 9:2 16:10 . Metaph., of the mind : pass., Eph 4:18 (cf. σκοτίζω ).† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain