Meaning A girl's name of Celtic origin, it means "Slender and comely." Origin of Caoilfhinnn Celtic , Irish Popular Middle Names Pronunciation 🔊 Listen Caoilfhinnn Similar Names Kyleen Arieen Berget Shakeela Waseefah Rhiamon Arleigh Afric Boudibiua Bellicent Year by Year Popularity of Caoilfhinnn