The crossword solution for the term 'Aaron Burr, ___' (from the song 'Hamilton') is 'SIR'. Aaron Burr was an American politician who served as the third Vice President of the United States from 1801 to 1805. He is best known for his duel with Alexander Hamilton, which resulted in Hamilton's death. Burr was also a successful lawyer and politician, and served in the Continental Army during the American Revolutionary War.