/ Dictionary / Index A agate line: Meaning and Definition of Find definitions for: ag'ate line" Pronunciation: [key] a measure of advertising space, of an inch deep and one column wide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. agate agateware Related Content Daily Word Quiz: taut Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language