/ Dictionary / Index S simoleon: Meaning and Definition of Find definitions for: si•mo•le•on Pronunciation: (su-mō'lē-un), [key] — n. Slang. a dollar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. simnel cake Simon Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language