Caolinn is a name of Irish origin, often used for girls. It is derived from the word "caol," meaning "slender" or "narrow." The name is sometimes associated with beauty and grace, reflecting the characteristics of its meaning. In addition to its cultural significance, Caolinn can also be linked to various places in Ireland, such as Caolinn River. The name is relatively uncommon outside of Ireland, making it a unique choice for parents looking for a distinctive name for their child.