Arabic

ǯummat- - toupet (toupee) (BK 1 322)

Another meaning of the same word ‘chevelure abondante et qui retombe sur les épaules’ may be influenced by the semantics of the apparently homonymous verbal root ǯmm ‘être riche, abondant [BK 1 321]

PS
*ga/umm(-at-)- - (long) hair, mane (SED I No. 81)