كحل = (n) kohl, eyeliner كحلي = navy blue, dark blue ( kuhly) كحلاء = black eyed ( feminine ) ( kahla' ) كحل = (v) to darken the eyelids with kohl or eyeliner

كحل ( kuhl ) = eyeliner

Kohl literally means Eyeliner, but it's unlike the eyeliner that used in other not Arabic countries, it exists in two form, either a Kohl Pencil, or a Kohl powder which is considered to be the original type or form of the Arabic Kohl :)