PS

*ḫsr - to blunt, to trim (Kogan 2015: 86, Kogan–Krebernik 2021b: 687)

PWS
*ḫsr - to be deficient; to lose (DRS 1012; Kogan 2015: 86)

PWS *ḫsr ‘to be deficient; to lose’ has been often compared to Akk. ḫesēru ‘to blunt, to chip, to trim’. If accepted, this comparison certainly implies the priority of the Akkadian meaning and, hence, points to a shared semanitc innovation in PWS

Akkadian
ḫesēru - to blunt, to chip, to trim (CAD Ḫ 176, AHw. 329)
Ebla
ḫa-zi-lum si-nu /ḫasiRum šinnu/ - one whose tooth is broken (VE 227, Kogan–Krebernik 2021b: 687)