/ Dictionary / Index R ruck: Meaning and Definition of Find definitions for: ruck Pronunciation: (ruk), [key] — n. a large number or quantity; mass. the great mass of undistinguished or inferior persons or things. ruck Pronunciation: (ruk), [key] — n. a fold or wrinkle; crease. —v.t., v.i. to make or become creased or wrinkled. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ruck (Thesaurus) ruching rucksack Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language