|Easton's Bible Dictionary|
Water of gold, the father of Matred (Genesis 36:39; 1 Chronicles 1:50), and grandfather of Mehetabel, wife of Hadar, the last king of Edom.
Int. Standard Bible Encyclopedia
mez'-a-hab, me-za'-hab (me zahabh, "waters of gold"; Codex Vaticanus Maizoob, Codex Alexandrinus, Mezoob): Grandfather of Mehetabel, the wife of Hadar, the last-mentioned "duke" of Edom descended from Esau (Genesis 36:39). The Jewish commentators made much play with this name. Abarbanel, e.g., says he was "rich and great, so that on this account he was called Mezahab, for the gold was in his house as water." The name, however, may denote a place, in which case it may be identical with Dizahab.
Mezahab (2 Occurrences)
Genesis 36:39 Baal Hanan the son of Achbor died, and Hadar reigned in his place. The name of his city was Pau. His wife's name was Mehetabel, the daughter of Matred, the daughter of Mezahab. (WEB KJV DBY WBS NAS)
1 Chronicles 1:50 Baal Hanan died, and Hadad reigned in his place; and the name of his city was Pai: and his wife's name was Mehetabel, the daughter of Matred, the daughter of Mezahab. (WEB KJV JPS DBY WBS NAS)