Abbott-Smith Manual Greek Lexicon
κεραία (G2762)
2 * κεραία (WH, κερέα , v. App. , 151), -ας, ἡ ( κέρας ), a little horn : of the point or extremity which distinguishes some Heb. letters from others (e.g. ד from ר ; DCG , ii, 733), Mt 5:18 , Lk 16:17 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain