MILREIS Meaning of MILREIS in English [mil.reis] n, pl mil.reis [Pg milreis] (1589) 1: a Portuguese unit of value equal before 1911 to 1000 reis 2: the basic monetary unit of Brazil until 1942 3: a coin representing one milreis Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012