Probably from 'anaq; slender, i.e. The ibex -- wild goat.
see HEBREW 'anaq
H689. aqqo
אַקּוֺ noun masculine wild goat (?) only Deuteronomy 14:5 in list of clean animals וּתְאוֺ וְדִישׁוֺן וְאַקּוֺ וְיַחְמוּר וּצְבִי אַיָּל וָזָ֑מֶר (ᵐ5 ὄρυξ, ᵑ7 ᵑ6 ibex; compare BoHieroz. i. 900 f., Thes below אנק compare MV, with reference to Arabic goat; Thes compare also Talmud אִיקָא, but NHWB MV refer this to αἴξ).
אֹר see אוֺר, for Amos Deuteronomy 8:8 see יְאֹר.