Kahill

The name Kahill has a dual etymology. In Irish, it is an anglicized form of the surname Mac Cathail, meaning 'son of Cathal'. Cathal itself is derived from the Old Irish elements 'cath' (battle) and 'val' (rule, valor), thus meaning 'battle ruler' or 'mighty in battle'. Separately, in Arabic, Kahill (كحيل) is a word that can mean 'one with kohl-lined eyes' or 'slender, fair'. This suggests two distinct origins and meanings for the name, depending on the cultural context.

While more commonly found as a surname in Ireland, its use as a given name is less frequent but does occur. The Arabic origin is also primarily a descriptive term or a less common given name. The phonetic similarity has led to its adoption in various cultures, sometimes without a direct understanding of its original etymological roots.