κέρας, -ατος
(pl. not irreg. as in Attic), τό, [in LXX chiefly for קָרַן ;]
a horn: Rev.5:6 12:3 13:1, 11 17:3, 7 17:12, 16; of the projections at the corners of the altar (Exo.29:12, al.): Rev.9:13. Metaphorical, as symbol of strength, κ. σωτηρίας (cf. Psa.18:3, al.): Luk.1:69.†
(AS)