/ Dictionary / Index E end line: Meaning and Definition of Find definitions for: end' line" Pronunciation: [key] — Sports. Sports. a line at each end of a court or playing field at right angles to the sidelines that defines one of the lengthwise boundaries of the playing area. a line at each end of a football field parallel to and 10 yds. (9 m) behind the goal line. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. endless endlong Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language