The world "Real" in portuguese means both royal, real (truth) and the currencry, and "reais" is the plural for all three. The currency name derives from "royal

The world "Real" in portuguese means both royal, real (truth) and the currencry, and "reais" is the plural for all three. The currency name derives from "royal" and it's a very old name back from the Monarchy days. _However_, during the Monarchy the plural for the old real-the-currency was "réis". Nowadays the plural for the modern real-the-currency (in use since 1994) is reais, like the other standard uses of "real" of the language.