/ Dictionary / Index N NGk: Meaning and Definition of Find definitions for: NGk Pronunciation: [key] New Greek. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. NGF NGNP Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language