Akkadian

ḫašû - human lungs, belly, entrails (CAD ḫ 143, AHw 335)

Von Soden gives the meaning ‘Lunge’ only [ibid.]. Note also ḫišû ‘a part of the human body’ [CAD ḫ 206]

PS
*ḥaŝy- - entrails (SED I No. 128)
Originally may have a more specified meaning ‘lung(s)’ (in Akk.) and ‘asthma’ (in some of the Arb. forms and in Sab.)