/ Dictionary / Index T Twelve Step: Meaning and Definition of Find definitions for: Twelve' Step' Pronunciation: [key] of or based on a program for recovery from addiction originating with Alcoholics Anonymous and providing 12 progressive levels toward attainment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Twelver twelve-string guitar 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