/ Dictionary / Index O Old Line State: Meaning and Definition of Find definitions for: Old' Line' State" Pronunciation: [key] Maryland (used as a nickname). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. old-line Old Low Franconian Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language