From an unused root meaning to hollow or curve; the back (as rounded (compare gev and guwph); by analogy, the top or rim, a boss, a vault, arch of eye, bulwarks, etc. -- back, body, boss, eminent (higher) place, (eye)brows, nave, ring.
see HEBREW gev
see HEBREW guwph
H1354. gab
גַּב back, etc., see below גבב
[גָּב], גָּבִים see גוב.
גַּב noun masculine:? compare Ezekiel 43:13 (feminine1:18) anything convex, curved, gibbous, e.g. back, chiefly late; — absolute גָּ֑ב 16:24; construct גַּב 43:13 (read ᵐ5 גֹּבַהּ Ew Sm Co); suffix גַּבִּי Psalm 129:3, גַּבֵךְ Ezekiel 16:31, 39; plural construct גַּבֹּת Leviticus 14:9, גַּבֵּי Job 13:12; 15:26; suffix גַּבֵּיהֶם 1 Kings 7:33, גַּבֵּהֶם Ezekiel 10:12, גַּבֵּיהֶן 1:18, גַֹּבֹּתָם 1:18; —
1 back, of man (figurative of Israel) Psalm 129:3; apparently of cherubim Ezekiel 10:12, but Hi Sm emend v. so that ׳גּ refers to wheels, rim see 6 below
2 mound, for illicit worship Ezekiel 16:24, 31, 39 (all "" רמה); ᵑ9 ᵐ5 lupanar, brothel, after analogy of fornix, but this without sufficient proof, & needless.
3 boss, or convex projection, of shield Job 15:26 (figurative) he runneth against him... with the stout bosses of his shields (i.e. wicked against ׳י); so in Arabic in similar phrase; compare also Arabic , shield; also French bouclier from boucle.
4 bulwarks, breastworks, figurative for arguments גַּבֵּיכֶם לְגַבֵּיחֹֿמֶר Job 13:12 breastworks of clay are your breastworks.
5 brow, only עֵינָיו גַּבֹּת Leviticus 14:9 his eyebrows.
6 rim of wheel, felloe 1 Kings 7:33; Ezekiel 1:18 (twice in verse); so perhaps 10:12 see 1 above — 43:13; elevation, i.e. basement of altar, Da after MT., but see גֹּבַהּ, compare above