Aiza is a name of Basque Spanish origin and means cliff or rockhttp://surnames.behindthename.com/. Aiza is a spelling variation on Arista, or in Basque, Aritza. The etymological meaning of Aiza (from P.Gmc.*aiza) is "honor"or 'honored ruler' http://www.etymonline.com/index.php?term=Eric Eric ("honored ruler, from P.Gmc. *aiza- "honor" + *rik- "ruler").