PS

*mVˁay- - intestines, entrails (SED I No. 185)

Akkadian
amūtu - liver (examined by the haruspex), liver model; omen (CAD A₂ 96, AHw. 46)

Note a meaning shift. Cf. māˀu ‘excrement’ [CAD m1 435]. 

Hebrew
mēˁayim - entrails, intestines (HALOT 609)
Biblical Aramaic
məˁē - belly (HALOT 1740)

pl. suff. məˁō̒hī. Note that the context Dan 2.32 clearly points to the external part of the belly.  

Demotic Aramaic
mˁyn - belly (DNWSI 1260)

(du.)

Jewish Babylonian Aramaic
məˁayyā - intestines (DJBA 694)
Syriac
məˁūṯā - intestines (LSyr. 397, SL 800)
Syriac
məˁayyā - intestines (LSyr. 397, SL 800)
Mandaic
mia - entrails, intestines (MD 265)
Maalula
maˁwṯa - guts, entrails (GNDM 56)
Turoyo
məˁwoṯe - Eingeweide (guts) (RW 332)
Turoyo
maˁye - Darm (intestines) (RW 301)
Arabic
maˁy-, maˁan - intestines (BK 2 1131)
Geez
ˀamāˁut - intestine (CDG 23)
Tigre
məˁo - bowels (WTS 135)
Tigrinya
ˀamˁut - intestine (Bass. 491)

Note stems with ˀa-­ prefix (on this problem see further [Rundgren 121-7]. 

Mehri
məˀəwəyēn - intestine (ML 260)
Harsusi
mˁeyīn - intestine (HL 87)
Soqotri
miˁḥo - small intestine; intestine (in general) (LS 248; Simeone-Senelle–Lonnet 1991:1466; CSOL II 531)

< *miˁˁ with dissimilation of the second ˁ?