From BiblePortal Wikipedia

Fausset's Bible Dictionary [1]

Son of Aram, Shem's son ( Genesis 10:28). Josephus (Ant. 1:6) says, "Mash founded the Mesanaeans," i.e. the inhabitants of Mesene near Bassera where the Tigris and Euphrates fall into the Persian gulf; this however seems too far from the other Aramaic settlements. Gesenius identifies the descendants of Mash with the inhabitants of Mount Masius, a range N. of Mesopotamia, above Nisibis. Knobel reconciles this with Josephus by supposing a migration from northern to southern Babylonia, which however is the reverse of the direction which the population usually took, namely from S. to N. In  1 Chronicles 1:17 the reading is Meshech, which the Septuagint reads perhaps correctly; also in  Genesis 10:23. Meshech occurred in  Genesis 10:2, among the sons of Japheth; but here ( Genesis 10:23) among Shem's descendants. Cappadocia was the original home of the Moschi (Meshech); its population was a mixed one, and a portion connected with Aram (Syria). Thus the name occurring in Japheth's line and also in Shem's line points to the mixture of Aramaic Moschi with Japhetic Moschi in Cappadocia (G. Rawlinson).

Webster's Dictionary [2]

(1): ( n.) A mesh.

(2): ( v. t.) To convert into a mash; to reduce to a soft pulpy state by beating or pressure; to bruise; to crush; as, to mash apples in a mill, or potatoes with a pestle. Specifically (Brewing), to convert, as malt, or malt and meal, into the mash which makes wort.

(3): ( n.) A mass of mixed ingredients reduced to a soft pulpy state by beating or pressure; a mass of anything in a soft pulpy state. Specifically (Brewing), ground or bruised malt, or meal of rye, wheat, corn, or other grain (or a mixture of malt and meal) steeped and stirred in hot water for making the wort.

(4): ( n.) A mixture of meal or bran and water fed to animals.

(5): ( n.) A mess; trouble.

Hastings' Dictionary of the Bible [3]

MASH. One of the sons of Aram,   Genesis 10:23 . The parallel passage,   1 Chronicles 1:17 , gives Meshech (wh. see), as also does LXX [Note: Septuagint.] in both passages. But this is wrong, as Meshech was Japhetic. Either Mons Massius is meant, or a region and people in the Syro-Arabian desert corresponding to the ‘desert of Mash’ of the Assyrian inscriptions.

J. F. M‘Curdy.

King James Dictionary [4]

MASH, n. L. mastico.

1. A mixture or mass of ingredients, beaten or blended together in a promiscuous manner. 2. A mixture for a horse. 3. A mesh. See Mesh, the more common orthography.

MASH, To beat into a confused mass.

1. To bruise to crush by beating or pressure as, to mash apples in a mill. 2. To mix malt and water together in brewing.

Smith's Bible Dictionary [5]

Mash. (Drawn Out). One of the sons of Aram.  Genesis 10:23. In  1 Chronicles 1:17, the name appears as Meshech. The name Mash is probably represented by the Mons Masius of classical writers, a range which forms the northern boundary of Mesopotamia, between the Tigris and Euphrates.

Hawker's Poor Man's Concordance And Dictionary [6]

We find this name,  Genesis 10:23. Some suppose it to be the same as Mesheek, to take away,—from Mashash.

Holman Bible Dictionary [7]

 Genesis 10:23 1 Chronicles 1:17

Morrish Bible Dictionary [8]

Son of Aram, and grandson of Shem.  Genesis 10:23 : called MESHECH, 1Chr. 1:17.

Easton's Bible Dictionary [9]

 1 Chronicles 1:17 Genesis 10:23

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [10]

(Heb. id. מִשׁ , signif. unknown; Sept. Μοσόχ , Vulg, Mes), the last named of the four sons of Aram (B.C. post 2513), and a tribe descended from him, who gave their name to a region inhabited by them ( Genesis 10:23); probably, therefore, to be sought in Syria or Mesopotamia. In the parallel passage ( 1 Chronicles 1:17) the name of MIESHECH has been erroneously substituted. Josephus (Ant. 1:6, 4) understands the Mesancei ( Μησαναῖοι ), and states that their locality "is now called Charax Of Spasinus." evidently the same place ( Χάραξ Πασινοῦ , Ptol. 6:3, 2), situated, according to others, at the junction of the Tigris and Euphrates (Plin. 6:26, and 31, ed. Hardouin). Most interpreters, however, following Bochart (Phaleg, 2:11), understand to be meant the inhabitants of Mount Malsius, which lies north of Nesibis, and forms part of the chain of Taurus separating Media from Mesopotamia (Strabo, 11:527; Ptol. v. 18, 2), of zwhich latter the Shemites occupied the southern part (Micilaelis, Spicileg. 2:140 sq.). "Knobel (Volkertajel, p. 237) seeks to reconcile this view with that of Josephus by the supposition of a migration from the north of Mesopotamia to the south of Babylonia, where the race may have been known in later times under the name of Meshech: the progress ef the population in these parts was, however, in an opposite direction, from south to north. Kalisch (Comm. on Genesis p. 286) connects the names of Mash and Mysia: this is, to say the least, extremely doubtful; both the Mysians themselves and their name (Mosia) were probably of European origin" (Smith). "It is remarkable that among the Asiatic confederates of the Kheta or Sheta, i.e. Hittites, who are enumerated as conquered by Rameses II at Kedesh on the Orontes, is found the prince of Maso or Masa (Brugsch, Hist. Deuteronomy 1'Egypte, 1:140, 142)." (See Ethnology).

International Standard Bible Encyclopedia [11]

( משׁ , mash ): Named in   Genesis 10:23 as one of the sons of Aramaic In the parallel passage in   1 Chronicles 1:17 the name is given as "Meshech" ( meshekh ), and the Septuagint ( Mósoch ) supports this form in both passages. "Meshech," however, is a Japhetic name ( Genesis 10:2 ), and "Mash" would seem to be the original reading. It is probably to be identified with the Mons Masius of classical writers (Strabo, etc.), on the northern boundary of Mesopotamia.