Abona, or Abonis (anc. geog.), a town and river of Albion. The town, according to Camden, is Abingdon; and the river Abhon or Avon. But by Antonine's Itinerary, the distance is nine miles from the Venta Silurum, or Caer-Went; others, therefore, take the town to be Porshut, at the mouth of the river Avon, over against Bristol. Abhon or Avon, in the Celtic language, denotes a river.