Strong's Definition
from 422 (in the original sense of strength); the stout part, i.e. the fat tail of the Oriental sheep
KJV Usage: rump
STEPBible — Tyndale Abridged Hebrew Lexicon
אַלְיָה (al.yah) — fat tail. tail, fat-tail (of sheep-an Eastern delicacy)
UBS Dictionary of Biblical Hebrew
UBS Dictionary of Biblical Hebrew © United Bible Societies, licensed CC BY-SA 4.0.
Brown-Driver-Briggs Hebrew Lexicon
אַלְיָה n.f. fat tail of sheep, still accounted a delicacy in the East base