/ Dictionary / Index S Shackleton: Meaning and Definition of Find definitions for: Shack•le•ton Pronunciation: (shak'ul-tun), [key] 1874–1922, English explorer of the Antarctic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. shackle shack-tapping Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language