Madai
The name Madai means “a measure; judging; a garment”.
Easton's Bible Dictionary 1897
Middle land, the third “son” of Japheth (Gen. 10:2), the name by which the Medes are known on the Assyrian monuments.
Smith's Bible Dictionary 1863
(middle land), (Genesis 10:2) is usually called the third son of Japhet, and the progenitor of the Medes; but probably all that is intended is that the Medes, as well as the Gomerites, Greeks, Tabareni, Moschi, etc., descended from Japhet.
International Standard Bible Encyclopedia 1915
mad'-a-i, ma'-di (madhay).
See MEDES.