US of A noun the United States ofAmerica US,1973 A variation of the conventional abbreviations US and USA.
Eminem on MTV eating Big Macs, drinking Coke and surfing the internet for anything with Britney Spears on it. What do all these have in common? Right first time, Georgie, baby. Country of origin: US of A. — TheGuardian, 18 November 2003