Immaculate is one that has no blemishes, unblemished. The term is used by the Catholic Faith to refer to a specific image of the Virgin Mary, the Immaculate Conception.
The word immaculate is a noun formed from the term macula, which means stain, plus the prefix "i" which marks a negative of the term that is attached later. The Portuguese word macula comes from the Latin of the same script, blemish.
Learn more about the meaning of macula.
In the Brazilian Northeast, the word Immaculate can also mean cachaça, as a synonym for the term "pure" and its derivatives, which is also used in other regions of the country to designate the drink.
Immaculate Conception
The Immaculate Conception is a dogma of the Catholic Church that places the Virgin Mary as "full of grace" and free from original sin. For this, her conception would also have been blessed, not just that of her son Jesus Christ, the son of God.
The absence of original sin is actually the non-relationship between Mary's parents at the time of her creation. This makes her a divine and Immaculate blessing, for her life was not initiated from the stain, from the blemish.
The expression "Immaculate Conception" means exactly that which was conceived without blemishes, and is used as a title attached to the name of Our Lady.