/ Dictionary / Index F fire line: Meaning and Definition of Find definitions for: fire' line" Pronunciation: [key] firebreak. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. firelight firelock 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