Strong's Definition
from an unused root corresponding to 7662; he will leave; Jishbak, a son of Abraham
KJV Usage: Ishbak
STEPBible — Tyndale Abridged Hebrew Lexicon
יִשְׁבָּק (yish.baq) — Ishbak. A man living at the time of the Patriarchs, first mentioned at Gen.25.2; son of: Abraham (H0085) and Keturah (H6989); brother of: Zimran (H2175), Jokshan (H3370), Medan (H4091), Midian (H4080) and Shuah (H7744); half-brother of: Ishmael (H3458) and Isaac (H3327) § Ishbak = "he releases" a son of Abraham by Keturah and progenitor of an Arabian tribe
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
יִשְׁבָּק n.pr.m. son of Abr. and Ḳetûrâh base