Fausset's Bible Dictionary
Properly "the Bithron," i.e. "divided place"; "all the B." a district in the Arabah or Jordan valley E. of the river (2 Samuel 2:29). The whole country in the Ghor on the other side of the river is broken and intersected. (See .)
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Fausset, Andrew R. Entry for 'Bithron'. Fausset's Bible Dictionary. https://www.studylight.org/dictionaries/eng/fbd/b/bithron.html. 1949.