Sabaic

ˁrḳ - neck muscle; collar-bone (SD 19)

Translated as ‘sweating sickness (?)’ in [Biella 385] and compared with Arb. ˁaraḳ- ‘sweat’.

PWS
*ˁa/irḳ- - tendon, muscle, vein, nerve (SED I No. 20)