BATAVORUM Oppidum, in Ancient Geography, a town in the island of the Batavi, mentioned by Tacitus, without any particular name; which has given rise to several surmises about it, some supposing it to be Nimcguen, but Cluverius, Batavadurum or Butenburg, both without the island; which situation renders both these places inadmissible, since Tacitus places this nameless town within the island.