/ Dictionary / Index N North Valley Stream: Meaning and Definition of Find definitions for: North' Val'ley Stream' Pronunciation: [key] a town on W Long Island, in SE New York. 14,530. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Northumbrian North Vancouver Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language