Abbott-Smith Manual Greek Lexicon
ἀστραπή (G796)
9 ἀστραπή , -ῆς, ἡ , [in LXX for בָּרָק ;] lightning : Mt 24:27 28:3 , Lk 10:18 17:24 ; pl., Re 4:5 8:5 11:19 16:18 ; of a lamp, shining brightness , Lk 11:36 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain