Reconstructions

PS
*gūg- - kind of insect (SED II No. 77)
PS
*gilˁ- - prepuce, clitoris (SED I No. 76)
Possibly derived from Sem. *glˁ 'to uncover' (in Hbr. pB., Arb., Tgr., etc., cf. [CDG 189]) implying that what later acquired the meaning 'prepuce' or related meanings in Syr. and Arb., and 'clitoris' in MSA (note that clitoral circumcision is a well-attested practice in a few regions of Southern Arabia, cf. [GD 565] with literature) originally meant 'the member subject to uncovering (= circumcision)'.
PS
*gu/alb- - (piece of) skin (SED I No. 77)
Probably has a non-anatomic cognate in Eth. (connection proposed e. g. in [DRS 117])
PS
*gVlgVl-at- - skull (SED I No. 79, LA 2 255, Kogan 2011: 220)
PS
*gVl(a)p­at- - skin; peel; scales; test (SED I No. 80)
Scarce but reliable attestation; variant root (with g vs. ḳ) of *ḳVlVp(­at)­ 'scale; shell; (hard) skin; foreskin (?); peel; bark of tree'; also *gu/alb­ '(piece of) skin'
PS
*ga/umm(-at-)- - (long) hair, mane (SED I No. 81)
PS
*g(ʷ)amg(ʷ)am-, *gVmgVm- - kind of bird (SED II No. 78)
PS
*gmr - to be complete, to come to an end (HALOT 197, CDG 194)
PS
*g(ʷ)ann- - breastbone; side of body (SED I No. 101)
PS
*ga(n)dab- - cricket, locust (SED II No. 80)