Open English Wordnet
Nouns
(n)United States Secret Service, US Secret Service, USSS, Secret Service, SSthe 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
(n)Schutzstaffel, SSspecial police force in Nazi Germany founded as a personal bodyguard for Adolf Hitler in 1925; the SS administered the concentration camps