/ Dictionary / Index I ignition interlock: Meaning and Definition of Find definitions for: igni'tion in"terlock Pronunciation: [key] — Auto. Auto. interlock (def. 10). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ignition coil ignition point 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