/ Dictionary / Index S Social Register: Meaning and Definition of Find definitions for: So'cial Reg'ister Pronunciation: [key] — Trademark. Trademark. the book listing the names, addresses, clubs, etc., of the principal members of fashionable society in a given city or area. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. social realism social science Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language