Dictionary entry

πρωινός

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

† πρωινός

(Rec. -ϊνος, v. WH, App., ή, -όν (< πρωί), [in LXX chiefly for בֹּקֶר;] = cl. πρώιος,

at early morn, early: ἀστήρ, Re 2:28 22:16.†