0 used after a verb or preposition to mean the person who is speaking or writing and one or more other people -- nos, nós
She gave us all a present.
1 abbreviation for the United States (of America) -- forma abreviada de “the United States (of America)”: os Estados Unidos da América, os EUA
2 belonging to or relating to the United States of America or its people -- estadunidense, norte-americano