/ Dictionary / Index N Nidwalden: Meaning and Definition of Find definitions for: Nid•wal•den Pronunciation: (nēt'väl"dun), [key] — n. a demicanton of Unterwalden, in central Switzerland. 26,200; 106 sq. mi. (275 sq. km). Cap.: Stans. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nidus Niebuhr Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language