Given the strong possibility that Sumerian DI (presumably pronounced /di:n/) is the origin of this word, one should probably return to the view expressed in LS2 that Akkadian is the proximate origin of all West Semitic related forms. This, then, would be a quite ancient borrowing, of Late Bronze Age times along with such words as hykl, the antiquity demonstrated by the common Aramaic developments such as mdynh n.f.