/ Dictionary / Index N nicknack: Meaning and Definition of Find definitions for: nick•nack Pronunciation: (nik'nak"), [key] — n. knickknack. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nicknack (Thesaurus) Nicklaus nickname 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