From the same as Arad; an onager (from his lonesome habits) -- wild ass.
see HEBREW Arad
H6171. arod
עָרוֺד noun [masculine] wild ass (probably Aramaic loanword ( = Hebrew מֶּרֶא), עֲרוֺדָא עֲרָדָא, ᵑ7 Syriac ; Mandean אראדא, compare Hom NS 133); **perhaps √ [run away?], < √ schreien [DHM zu Asma'ï, Farq p.43] das auch vom Wildesel vorkommt Amra alqais 4. 21, Zuhair 1. 25.' — NöFünf Mo`all, ii. 75 (SB Wlender Akkadian cxlii). — Job 39:5.