I wasn't referring to "amigo" -- I know that's Portugese, but I was referring to "senoritas". That's Spanish. Portegese would be "solteironas," "mulhers," or "senhoras".
Well, I'm brazilian and "senhoritas" is an actual word in portuguese. It means "young ladys", while "senhoras" means "ladys", and it's used for married or older women. "Solteironas" means "single women", and it's not used to refer to chicks...