Dictionary entry

ἀστραπή

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

ἀστραπή, -ῆς, ἡ,

[in LXX for בָּרָק;]

lightning: Mt 24:2728:3, Lk 10:1817:24; pl., Re 4:58:511:1916:18; of a lamp, shining brightness, Lk 11:36.†