/ Dictionary / Index A Adirondack: Meaning and Definition of Find definitions for: Ad•i•ron•dack Pronunciation: (ad"u-ron'dak), [key] — pl. -dacks, -dack. a member of an Algonquian people living mainly north of the St. Lawrence River. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. adipose tissue Adirondack chair Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language