/ Dictionary / Index T Twelver: Meaning and Definition of Find definitions for: Twelv•er Pronunciation: (twel'vur), [key] — n. Islam. Imamite. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: twelver (Thesaurus) twelve patriarchs Twelve Step Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language