1. (

• United_States_Secret_Service ,
• US_Secret_Service ,
• USSS ,
• Secret_Service ,
• SS ,

) the United States intelligence agency that protects current and former presidents and vice presidents and their immediate families and protects distinguished foreign visitors; detects and apprehends counterfeiters; suppresses forgery of government securities and documents ;

2. (

• Schutzstaffel ,
• SS

) special police force in Nazi Germany founded as a personal bodyguard for Adolf Hitler in 1925; the SS administered the concentration camps ;