/ Dictionary / Index L load-line mark: Meaning and Definition of Find definitions for: load'-line mark" Pronunciation: (lōd'līn"), [key] — Naut. Naut. any of various marks by which the allowable loading and the load line at load displacement are established for a merchant vessel; a load line. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. load line loadmaster Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language