/ Dictionary / Index L line segment: Meaning and Definition of Find definitions for: line' seg"ment Pronunciation: [key] — Geom. Geom. segment (def. 2b). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. liner note linesman 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