A pile of stones heaped up as a landmark, to guide travelers on land or at sea, or to arrest attention, as in surveying, or in leaving traces of an exploring party, etc.
A cairn terrier.
A rounded or conical heap of stones erected by early inhabitants of the British Isles, apparently as a sepulchral monument.
A flat stone used to pave a pathway, such as a walkway to one's home.
One who paves; one who lays pavement.