PWS

*ˁa(n)ṣab- - sinew, nerves (SED I No. 16)

Poorly attested; the MSA terms may be Arabisms. The Tgr. form is hardly an Arb. loan pace [Leslau Loanwords 166].

Arabic
ˁaṣab- - (coll.) nerfs (BK 2 268, Lane 2058)
Tigre
ˁanṣäbät - sinew (WTS 475)
Var ˀanṣäbät. According to Munzinger, ˀanṣäbät ‘nerf, corde’.
Mehri
ˀāṣbīt - sinew, nerve (ML 30)
Jibbali
ˁaṣbέt - condition of having headaches (JL 16)
Looks like a late semantic development; note that in [JH 10] the same Jib. word is quoted untranslated obviously implying the same meaning ‘sinew, nerve’ as in Hrs.
Harsusi
ˀāṣebét - sinew, nerve (HL 10)