From BiblePortal Wikipedia

Hastings' Dictionary of the Bible [1]

Amraphel . The king of ShinarGenesis 14:1 ). He has been identified (by Schrader and usually) with Hammurabi, king of Babylonia, but apart from the difficulties due to differences of spelling, there is no evidence that Hammurabi was ever allied with a king of Elam and a king of Larsa to invade the West. Boscawen suggests Amar-Pal, the ideographic writing of Sinmuhallit, the father of Hammurabi, for whom such an alliance is more likely. See Chedorlaomer.

C. H. W. Johns.

People's Dictionary of the Bible [2]

Amraphel ( Ăm'Ra-F Ĕl ), Keeper, or Highest Of The Gods. Perhaps a Hamite king of Shinar or Babylonia, who joined the victorious incursion of the Elamite Chedorlaomer against the kings of Sodom and Gomorrah and the cities of the plain.  Genesis 14:1.

Fausset's Bible Dictionary [3]

One of the four invading kings ( Genesis 14:9). Shinar, his kingdom, or Babylonia, was subordinate to the great Elanrite king, (See Chedorlaomer .) The Assyrian monuments attest that an Elamite king invaded and plundered Babylonia in 2386 B.C.; and Babylonian remains bear traces of Elamitic influence.

Smith's Bible Dictionary [4]

Am'raphel. (Keeper Of The Gods). Perhaps a Hamite king of Shinar or Babylonia, who joined the victorious incursion of the Elamite, Chedorlaomer, against the kings of Sodom and Gomorrah and the cities of the plain. Genesis 14. (B.C. 1898).

American Tract Society Bible Dictionary [5]

King of Shinar in the time of Abraham. With three other petty kings, he made war upon the tribes around the Dead Sea, and the cities of the plain,  Genesis 14:1 .

Morrish Bible Dictionary [6]

King of Shinar, in the time of Abram.  Genesis 14:1,9 .

Holman Bible Dictionary [7]

 Genesis 14:1-9

Easton's Bible Dictionary [8]

 Genesis 14:1,4

International Standard Bible Encyclopedia [9]

am´ra - fel , am - rā´fel ( אמרפל , 'amrāphel , or, perhaps better, 'amerāphel ).

1. The Expedition Against Sodom and Gomorrah

This name, which is identified with that of the renowned Babylonian king H̬ammurabi (which see), is only found in   Genesis 14:1 ,  Genesis 14:9 , where he is mentioned as the king of Shinar (Babylonia), who fought against the cities of the plain, in alliance with Arioch king of Ellasar, Chedorlaomer king of Elam, and Tidal king of Nations (the Revised Version (British and American) Goiim ). The narrative which follows is very circumstantial. From it we learn, that Bera king of Sodom, Birsha king of Gomorrah, Shinab king of Admah, Shemeber king of Zeboiim, and the king of Bela or Zoar, had served Chedorlaomer for 12 years, rebelled in the 13th, and in the 14th year Chedorlaomer, with the kings enumerated, fought with and defeated them in the vale of Siddim, which is described as being the Salt Sea. Previous to this engagement, however, the Elamites and their allies had attacked the Rephaim ( Onkelos  : "giants") in Ashtaroth-karnaim, the Zuzim (O: "mighty ones," "heroes") in Ham (O: Ḥamtā' ), the Emim (O: "terrible ones") in Shaveh-kiriathaim, and the Horites in their Mount Seir, by the Desert. These having been rendered powerless to aid the revolted vassals, they returned and came to Enmishpat, or Kadesh, attacked the country of the Amalekites, and the Amorites dwelling in Hazazontamar ( Genesis 14:2-7 ).

2. The Preparation and the Attack

At this juncture the kings of the cities of the plain came out against them, and opposed them with their battle-array in the vale of Siddim. The result of the fight was, that the kings of Sodom and Gomorrah, with their allies, fled, and fell among the bitumen-pits of which the place was full, whilst those who got away took refuge in the mountain. All the goods and food (the camp-equipment and supplies) of the kings of the plain were captured by Chedorlaomer and his allies, who then continued their march (to their own lands) ( Genesis 14:8-11 ).

3. Abraham's Rescue of Lot

Among the captives, however, was Lot, Abram's nephew, who dwelt in Sodom. A fugitive, having escaped, went and announced the result of the engagement to Abram, who was at that time living by Mamre's oak plantation. The patriarch immediately marched forth with his trained men, and pursued them to Dan, where he divided his forces, attacked the Elamite-Babylonian army by night, and having put them to flight, pursued them again to Hobah, on the left (or North) of Damascus. The result of this sudden onslaught was that he rescued Lot, with the women and people, and recaptured Lot's goods, which the allies of Amraphel had carried off ( Genesis 14:12-16 ).

4. Difficulties of the Identification of Amraphel

There is no doubt that the identification of Amraphel with the H̬ammurabi of the Babylonian inscriptions is the best that has yet been proposed, and though there are certain difficulties therein, these may turn out to be apparent rather than real, when we know more of Babylonian history. The "l" at the end of Amraphel (which has also "ph" instead of "p" or "b") as well as the fact that the expedition itself has not yet been recognized among the campaigns of H̬ammurabi , must be acknowledged as two points hard to explain, though they may ultimately be solved by further research.

5. Historical Agreements

It is noteworthy, however, that in the first verse of Gen 14 Amraphel is mentioned first, which, if he be really the Babylonian H̬ammurabi , is easily comprehensible, for his renown to all appearance exceeded that of Chedorlaomer, his suzerain. In  Genesis 14:4 and   Genesis 14:5 , however, it is Chedorlaomer alone who is referred to, and he heads the list of eastern kings in  Genesis 14:9 , where Tidal comes next (a quite natural order, if Goiim be the Babylonian Gutê, i.e. the Medes). Next in order comes Amraphel, king of Babylonia and suzerain of Arioch of Ellasar ( Êri-Aku of Larsa ), whose name closes the list. It may also be suggested, that Amraphel led a Babylonian force against Sodom, as the ally of Chedorlaomer, before he became king, and was simply crown prince. In that case, like Belshazzar, he was called "king" by anticipation. For further details see Arioch and Chedorlaomer , and compare Eri-Aku and H̬AMMURABI  ; for the history of Babylonia during H̬ammurabi 's period, see that article.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [10]

(Heb., Amraphel', אִמְרָפֶל , apparently the Sanscrit Amarapala, "Keeper Of The Gods;" Sept. Ἀμαρφάλ , Josephus Ἀμράφηλος , Ant. 1, 9, 1), a king (perhaps Hamite, comp. Rawlinson's Herodotus, 1, 446) of Shinar (i.e. Babylonia), confederated with Chedorlaomer (q.v.), king of Elam, and two other kings, to make war against the kings of Pentapolis, viz., Sodom, Gomorrah, and the three neighboring cities, which they plundered; among the captives whom they carried off was Lot, Abrahami's nephew; but Abraham (q.v.) pursued them, retook Lot, and recovered the spoil ( Genesis 14:1;  Genesis 14:4), B.C. cir. 2080.

Kitto's Popular Cyclopedia of Biblial Literature [11]

Am´raphel, king of Shinar, one of the four kings who invaded Palestine in the time of Abraham ( Genesis 14:1-2, seq.) [[[Abraham; Chedorlaomer]]]