1. Special Air Service a specialist regiment of the British army that is trained in commando techniques of warfare and used in clandestine operations (especially against terrorist groups)
  2. socialism a political theory advocating state ownership of industry
  3. social service an organized activity to improve the condition of disadvantaged people in society
  4. Special Forces a division of the United States Army that is specially trained for guerilla fighting
  5. special interest an individual or group who are concerned with some particular part of the economy and who try to influence legislators or bureaucrats to act in their favor
  6. selective service a system in which people are drafted into the military
  7. Selective Service an independent federal agency that administers compulsory military service
  8. armed services the military forces of a nation
  9. Security Service the government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory
  10. Secret Service 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
  11. civil service government workers
  12. General Security Services the Israeli domestic counterintelligence and internal security agency
  13. special session a session that is held in addition to the regular sessions
  14. specialized developed or designed for a particular activity or function
  15. public service a service that is performed for the benefit of the public or its institutions
  16. postal service the system whereby messages are transmitted via the post office
  17. use of goods and services (economics) the utilization of economic goods to satisfy needs or in manufacturing
  18. chapel service a service conducted in a place of worship that has its own altar
  19. specialistic of or related to or characteristic of specialists
  20. specializer an expert who is devoted to one occupation or branch of learning