What does "La Rioja" Mean?

What are the origins of La Rioja in Spain?

It's a contracted form of Rio Oja. It is certainly not a grape! The main grape in Red Rioja is Tempranillo althogh others are alo used,

La Rioja is a province and autonomous community of northern Spain. To learn more, go to http://en.wikipedia.org/wiki/La_Rioja_%2...

Rioja is a Spanish red wine grape, but I really don't know what "La Rioja" means. Rioja wine is quite good though.