Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
‡ Ŏrēos, i, m., = ὄρειος, of the mountain, i. e. Pan: Oreos Liber pater, et Oreades Nymphae appellantur, quod in montibus frequenter apparent, Fest. p. 182 Müll.
Ōrēus (-os), i, f., a city in Eubœa, formerly Histiœa, Liv. 28, 5, 18; 31, 40, 10; Plin. 4, 12, 21, § 64.