This is the 7456th most frequent Portuguese word.
mr
The sequence "mr" is not a word in Portuguese. If you meant "Sr.", it stands for "Mr." in English, used as a title for men.
The word 'Sr.' is an abbreviation for 'Senhor', used formally to address or refer to men similar to 'Mr.' in English.
O Sr. João é muito educado.
Mr. João is very polite.
'Sr.' is used here to formally address a person in professional or respectful contexts, showing politeness.
Pergunte ao Sr. Gonçalves se ele deseja um café.
Ask Mr. Gonçalves if he would like some coffee.
The term 'Sr.' indicates a position or title, often used in formal and official settings.