Areal reconstruction

*pagr- - body, trunk (SED I No. 209; Kogan 2011: 214)

Akkadian
pagru - body, trunk (CAD P 12, AHw. 809)
Ugaritic
pgr - body, corpse as a funerary offering (DUL 655)
Hebrew
pägär - corpse (HALOT 911)
Old Aramaic
pgr - body (of living person); mortal remains, dead body (DNWSI 901)
Official Aramaic
pgr - body (of living person); mortal remains, dead body (DNWSI 901)
Palmyrean
pgr - body (of living person); mortal remains, dead body (DNWSI 901)
Jewish Palestinian Aramaic
pgr - body (DJPA 424)
det. pgrh, pwgrh
Jewish Babylonian Aramaic
pagrā - body (DJBA 887)
Syriac
pagrā - body, cadaver (LSyr. 556, SL 1156)
Mandaic
pagra - body (MD 359)
Arabic
fǯr - to commit adultery, fornication with a woman (BK 2 544, Lane 2340)
For a similar semantic shift cf. JBA gwp ‘to prostitute oneself’.