Syriac

šāriṯā - sinew, tendon (LSyr. 808, SL 1607)

PS
*ŝVry/w/ˁ-, *ŝVry/ ˁ-ān- - (Achilles) tendon; sinew, muscle (of leg) (SED I No. 268)
A very difficult case (v. SED I).