PS

*ḥumṣ-at- - birth-mark, scar on the skin (SED I No. 121; Kogan 2011: 230)

Akkadian
umṣatu - a mole or wart (CAD U-W 135, AHw. 1418)
Arabic
ḥummaṣat- - cautère, ulcère artificiel (Dozy I 322)