Arabic

maǯl- - pus (BK 2 1065, Piamenta 1990: 460, GD 2676)

the word means ‘blister’ in Classical Arabic, but the meaning ‘pus’ is attested in Yemen and Daṯīna

PWS
*mugl- - pus (SED I No. 186; Kogan 2011: 214)