Or cheleb {khay'-leb}; from an unused root meaning to be fat; fat, whether literally or figuratively; hence, the richest or choice part -- X best, fat(-ness), X finest, grease, marrow.
H2459. cheleb
I. חֵ֫לֶב noun masculineExodus 29:13 fat (Late Hebrew id., fat, so Phoenician חלב (probably); Aramaic (also diaphragm in Lexicons, see PS1274) originally diaphragm, midriff; Arabic , including midriff-fat, RSSemitic i. 360); — ׳ח absolute Leviticus 3:16 40t.; construct Genesis 45:18 21t.; suffix חֶלְבּוֺ Leviticus 3:9 6t.; חֶלְבָּהּ 4:31, 35, חֶלְבָּם Numbers 18:17, חֶלְבָּ֫מוֺ Psalm 17:10, חֶלְבְּהֶ֫ן Leviticus 8:16, 25 (read plural noun חלביהן Samaritan Di); plural הַחֲלָבִים 8:26 7t.; construct חֶלְבֵי 6:5 4t.; suffix חֶלְבֵהֶן Genesis 4:4 (חלביהן Samaritan Di, compare Leviticus 8:16, 25 above); —
1 fat of human body Judges 3:22 (covering intestines); גִּבּוֺרִים׳ח 2 Samuel 1:22 as smearing warrior's shield; of grossness of wicked בְּחֶלְבּוֺ מָּנָיו כִּסָּה Job 15:27; fat (of midriff) figurative of unreceptive heart ׳ח סָֽגְרוּ Psalm 17:10, see also 73:7 (read עֲוֺנָמוֺ מֵחֵלֶב for ᵑ6 ᵐ5 עֵינֵמוֺ מחלב Hi Ew Ol De Che Bae and others); לִבָּם כַּח ׳טָפַשׁ 119:70 i.e. their heart is as unresponsive as the midriff-fat near it.
2 fat of beasts:
a. as rich food (poetry) Deuteronomy 32:14 and in simile Psalm 63:6 ("" דֶּשֶׁן); so ᵑ0 Ezekiel 34:3 (but read הֶחָלָב, see חָלָב), 39:19 (ᵑ6 Co בשׂר).
b. especially as offered in sacrifice, singular, to ׳י Exodus 23:18 (JE), 1 Samuel 2:15-16, Exodus 29:13 (twice in verse); 29:22 (3 t. in verse); Leviticus 3:3 (twice in verse); 3:4, 9 (3 t. in verse); 3:10, 14 (twice in verse); 3:15 23t. Leviticus; Numbers 18:17 (all P), Leviticus 17:6 (H), 1 Samuel 15:22; Isaiah 1:11; 43:24; Ezekiel 44:7, 15; see Isaiah 34:6 (twice in verse); 34:7 of fat of Edomites slaughtered by ׳י's sword (under figure of lambs, rams, and bulls); as eaten by (strange) gods Deuteronomy 32:38 (poetry), not to be eaten by men Leviticus 3:17; 7:23-24, (twice in verse); 7:25 (all P); also plural, fat parts or pieces Genesis 4:4 (J) Leviticus 6:5 8t. Leviticus; 1 Kings 8:64 (twice in verse); 2 Chronicles 7:7 (twice in verse); 29:35; 35:14.
3 choicest, best part of products of land Genesis 45:18 (E), specifically of oil Numbers 18:12 and wine 18:12; of corn and oil 18:29; 18:30; 18:32; also (poetry) ׳ח חִטָּה כִּלְיוֺת Deuteronomy 32:14 kidney-fat of wheat (i.e. the very choicest, compare Isaiah 34:6), ׳ח חִטָּה Psalm 81:17, ׳ח חִטִּים Psalm 147:14.