Cailin

Irish

"pup, cub"

Cailin Origin and Meaning

The name Cailin is a boy's name.

Cailin is an Irish name with Gaelic origins, traditionally used for girls but occasionally given to boys. It means 'slender' or 'pure' and is derived from the Gaelic word 'caol,' referring to something slim or narrow. As a masculine name, Cailin is quite rare and unconventional. The name carries a melodic quality with its soft sounds, making it appealing across genders. In Irish tradition, pronunciation is typically 'KAY-lin' or 'KY-lin.' While gaining some recognition internationally, Cailin remains strongly connected to Irish heritage and culture, representing a bridge between traditional naming practices and modern gender-fluid naming trends.