ClipArt ETC
"A low column, sometimes round, but more frequently rectangular. Cippi were used for various purposes; the decrees of the senate were sometimes inscribed upon them; and with distances engraved upon them, they also served as mile-stones. They were however, more frequently employed as sepulchral monuments. It was also usual to place at one corner of the burying-ground a cippus, on which the extent of the burying-ground was marked, towards the road, and backwards to the fields." — Smith, 1873

Cippus

"A low column, sometimes round, but more frequently rectangular. Cippi were used for various purposes;…