TgO Gen36:31 :וְאֵלִין מַלכַיָא דִמלַכוּ בארעא דַאֲדוֹם קְדָם דִימלוֹך מַלכָא לִבנֵי יִשרָאֵל‏ : these are the kings who reigned in the land of Edom before a king of the children of Israel would reign
See the entire entry for mlk vb. to rule; to advise; to promise

TgO Gen36:31 :קְדָם דִימלוֹך מַלכָא לִבנֵי יִשרָאֵל‏ : before any Israelite king would rule
See the entire entry for qḏām, qŭḏām prep. before