S.abbr.1. saint2. sea3. Medicine signature4. a. signorb. signores.abbr.1. section2. shilling3. singular4. sire5. solo6. son7. substantiveAmerican 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.s. abbreviation for 1. see 2. semi- 3. shilling 4. (Grammar) singular 5. son 6. succeeded S. abbreviation for pl SS1. (Ecclesiastical Terms) Saint2. school3. (Placename) Sea4. Signor5. Society [Latin socius]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014