Amburbium

When Amburbium (Latin amb -, " around, around "; urbs, " city ", note the connection with urvare, " plow ", explains at sulcus primigenius ) is an ancient festival of the Roman religion, namely one dealing the city of Rome under entrainment of sacrificial animals, presumably suovetaurilia, which took place in early February and make atonement for the city should. Originally there were feriae conceptivae. In later times they mixed with the celebrated according to the Greek rite lustratio urbis.

A comparable in some respects rite for fields were the Ambarvalia.