/ Dictionary / Index H Hillsdale: Meaning and Definition of Find definitions for: Hills•dale Pronunciation: (hilz'dāl"), [key] — n. a town in NE New Jersey. 10,495. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hillsborough hillside Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language