/ Dictionary / Index Z zone line: Meaning and Definition of Find definitions for: zone' line" Pronunciation: [key] — Ice Hockey. Ice Hockey. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. zone defense zone melting Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language