/ Dictionary / Index J Jackson Day: Meaning and Definition of Find definitions for: Jack'son Day" Pronunciation: [key] January 8, a holiday commemorating Andrew Jackson's victory at the Battle of New Orleans in 1815: a legal holiday in Louisiana. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Jackson Jackson Hole Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language