Lewis & Short

Hĕlōrus (or Elōrus), i, m., = Ἔλωρος or Hĕlōrum, i, n., = Ἔλωρον, a river on the eastern coast of Sicily, now Atellaro, al. Abisso, Verg. A. 3, 698; Cic. Verr. 2, 5, 34, § 90: clamosus, Sil. 14, 269: flumen Elorum, Plin. 3, 8, 14, § 89.
At its mouth was situated the city Hĕlōrus (El-), i, f., Liv. 24, 35 init.; Plin. 32, 2, 7, § 16; the vale of which was called Hĕlōrĭa Tempē, Ov. F. 4, 477; and the inhabitants, Hĕlōrīni (El-), Cic. Verr. 2, 3, 43, § 103.