What is 'gringa'?

Well, in Hungary I would not be really impressed, someone calling me gringa (or gringo), it just does not have a nice meaning. Sooo, I was not very happy either, when people here in Brazil started to identify me as 'gringa'..... at least until I found out, it means 'foreigner', 'people from abroad'. Ahhh, ta. Ta bom! This way, I can accept it.