PCS

*šVlḫ- - skin, hide (SED I No. 244; Kogan 2015: 312)

Possibly referring to fresh or removed skin in which case it can hardly be considered an anatomic term.

Akkadian
mašlû - leather bucket; hide (used for wrapping) (CAD m 1, 380; AHw. 628)
Hebrew
šälaḥ - hide, fresh skin (Jastrow 1580)

pB. 

Palmyrean
šlḥ - skin (DNWSI 1142)
Jewish Palestinian Aramaic
šlḥ - stripper or dealer of hides (DJPA 551)
Jewish Palestinian Aramaic
šlḥ - not entirely processed hide (DJPA 551)
Jewish Babylonian Aramaic
šallāḥā - stripper of dealer in hides (DJBA 1148)
Jewish Babylonian Aramaic
šilḥā - leather, leather box, skin of fruit (DJBA 1135)
Syriac
šelḥā - skin, pelt (LSyr. 780, SL 1562)
Arabic
salḫ- - skin or hide that is stripped off (BK 1 1121, Lane 1404)