PS

*ḥVmm(-at)- - breast, stomach, entrails (SED I No. 119)

Both vocalic and semantic reconstruction is rather amorphous.

Akkadian
umandu - part of human insides (AHw. 1412)
< *ḥum(a)m-t-­? (­-nd­- < ­-mt-­ is not uncommon for SB period [GAG 29]).
Arabic
ḥammāmat- - middle of chest, chest, breastbone, etc. (BK 1 487)
There are two other anatomical terms which are, however, difficult to compare for semantic reasons: ḥammāˀ- ‘fesses’ [ibid. 486] and ḥamm­-, ḥammat-­ ‘fat tail of melted sheep’ [ibid.] (an original meaning likely to be ‘fat tail of a sheep’, the meaning ‘melted’ acquired through contamination with the homonymous verb ḥmm ‘chauffer’ [ibid. 485]
Tigre
ḥəmməto - a dish of entrails cut to pieces (WTS 62)
Tigrinya
ḥəmməto - a dish made of entrails of goat, sheep etc. (Bass. 40)
Soqotri
ḥaym - pudenda (male and female) (CSOL I 569; Naumkin et al. 2013a:75; Simeone-Senelle–Lonnet 1991:1460)