Abbott-Smith Manual Greek Lexicon
κέρας (G2768)
11 κέρας , -ατος (pl. not irreg. as in Attic), τό , [in LXX chiefly for קֶרֶן ;] a horn : Re 5:6 12:3 13:1 , 11 17:3 , 7 , 12 , 16 ; of the projections at the corners of the altar ( Ex 29:12 , al.): Re 9:13 . Metaph., as symbol of strength, κ. σωτηρίας (cf. Ps 17 (18):3 , al.): Lk 1:69 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain