Arabic

šariyyān-, širyān- - artery (BK 1 1224, Lane 1546)

It is not clear whether the meaning of the last form refers to the singular or the plural: data from other dictionaries corraborate the former suggestion (Dozy I 754, Belot Arb.-Fr. 371).

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