Abbott-Smith Manual Greek Lexicon
ὑπωπιάζω (G5299)
2 * ὑπωπιάζω ( ὑπώπιον , (a) the part of the face below the eyes ; (b) a blow on the face ), to strike under the eye , give a black eye : metaph., of persistent annoyance (RV, wear out ), Lk 18:6 ; of severe self-discipline (R, txt. buffet , mg. bruise ), I Co 9:27 (v. Field, Notes , 71, 174).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain