Boyd’s Bible Dictionary:
(leaving). Son of Abraham, and father of northern Arabians (Gen. 25:2; 1 Chron. 1:32).
Concise Bible Dictionary:
Son of Abraham and Keturah. Abraham gave him gifts, and sent him away from Isaac unto the east country (Gen. 25:2, 6; 1 Chron. 1:32). An Assyrian inscription mentions “Bur-anate of the land of Iasbuk” (Ia-as-bu-qa-ai) which is judged to refer to the above, situated on the west bank of the Euphrates.
Strong’s Dictionary of Hebrew Words:
Meaning:
from an unused root corresponding to 7662; he will leave; Jishbak, a son of Abraham
Jackson’s Dictionary of Scripture Proper Names:
he will leave (alone)
Potts’ Bible Proper Names:
He excels; he will leave:―a son of Abraham by Keturah, Gen. 25:2. {Praecellit}