PWS

*ṯad(y)- - female breast (SED I No. 280; Kogan 2011: 217)

Ugaritic
ṯd - breast, bosom, chest, teat, udder (DUL 889)
Hebrew
šād - female breast (HALOT 1416)
Hebrew
šōd - mother's breast (HALOT 1418)
Jewish Palestinian Aramaic
td - breast (DJPA 575)

tdyn, tddyn (pl.)

Jewish Babylonian Aramaic
taddā - breast (Jastrow 1647)
Syriac
tdā - breast (LSyr. 816, SL 1624)
Arabic
ṯady- - breast (Lane 333)
Mehri
ṯódi - breast, bosom (ML 415)
Jibbali
ṯɔ́dεˀ - female breast (JL 283)
Harsusi
ṯōdi - breast (HL 132)
Soqotri
tódi - female breast (LS 439, CSOL I 673, CSOL II 608)

see also SSL LS 1477, SSL 4 98
See gέhɛ ‘breast’ for the difference between the words.