Meaning and name origin
Cairn \ca(i)-rn\ as a boy's name is of Scottish and Gaelic origin, and the meaning of Cairn is "mound of rocks". Place name. Cairns were built as far back as the Stone Age, and many of these ancient cairns can be seen in the British Isles.
For more information, see also the related boy name Carnell.
Cairn is not a popular first name for males and an equally uncommon surname or last name for all people (Source: 2000 U.S. Population Census).
Displayed below is a comparison of the popularity of the boy name Cairn and its variant forms. The only popular variation form ranked in the Top 1000/100 is Carnell. (Source: 2014 Birth Name Statistics).