What does Cairn mean?
Cairn \ca(i)-rn\ as a boys' 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 on this name, see also the related boy name Carnell.
Cairn is an uncommon given name for men. Cairn is an equally unique last name for both adults and children. (2000 U.S. Census)
Carnell is the only popular variation form of Cairn (#unlisted) appearing in the Top 1000. Adoption of these boy names was at its most widespread during 1950-1959 (usage of 0.103%) and is now lower. Displayed below is an analysis of the popularity of the boy name Cairn and corresponding names. (2014 Birth Statistics)