The origin of the word Andorra is unknown, although several hypotheses have been formulated. The oldest derivation of the word Andorra is from the Greek historian Polybius (''The Histories'' III, 35, 1) who describes the Andosins, an Iberian Pre-Roman tribe, as historically located in the valleys of Andorra and facing the Carthaginian army in its passage through the Pyrenees during the Punic Wars. The word Andosini or Andosins () may derive from the Basque '''' whose meaning is "big" or "giant". The Andorran toponymy shows evidence of Basque language in the area. Another theory suggests that the word Andorra may derive from the old word Anorra that contains the Basque word '''' (water).