SS 1 (?s??s?)n. An elite organization within the Nazi party that served as Hitler’s personal guard and included police units and special forces, carrying out mass killings of civilians and overseeing concentration camps.[German, abbr. for Schutzstaffel : Schutz, defense + Staffel, echelon.]SS 2abbr.1. saints2. or S/S same size3. shortstop4. Social Security5. Song of Solomon6. steamship7. strong safety8. Sunday schoolAmerican Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.ss the internet domain name for (Computer Science) South Sudan SS abbreviation for 1. (Historical Terms) a paramilitary organization within the Nazi party that provided Hitler’s bodyguard, security forces including the Gestapo, concentration camp guards, and a corps of combat troops (the Waffen-SS) in World War II 2. (Nautical Terms) steamship 3. (Ecclesiastical Terms) Sunday school [(sense 1) German Schutzstaffel protection squad]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014SS 1. Schutzstaffel. 2. social security. 3. steamship. 4. supersonic. ss or ss., (in prescriptions) a half. [