A concubine was an inferior kind of wife, taken according to the common practice of those times, subject to the authority of the principal wife, and whose children had no right of inheritance, but were endowed with gifts. See Genesis 21:14, Genesis 25:6. Maachah, a name common both to man, as 2 Samuel 10:6, and woman, as 1 Kings 15:13.
Related Commentaries of Genesis 22:24
Genesis 22:24
24 And his concubine, whose name was Reumah, she bare also Tebah, and Gaham, and Thahash, and Maachah.