Lewis Short
circum-lŭvĭo | cir-cumlŭvĭum, ii (noun F.n) : f.; and , , n.luo
* The accumulation of land by alluvion around a piece of land, alluvial land: jura circumluvionum,the right of using such land,Cic. de Or 1, 38, 173.—Form circumluvium, Paul. ex Fest. p. 64, 14 Müll., and Isid. Orig. 14, 8, 12.
Charlton T. Lewis, Charles Short, A Latin Dictionary