/ Dictionary / Index L line space: Meaning and Definition of Find definitions for: line' space" Pronunciation: [key] (on a typewriter, typesetter, printer, or the like) the horizontal space provided for a line of typing, typesetting, printing, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. linesman line spectrum Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language