/ Dictionary / Index N National Park Service: Meaning and Definition of Find definitions for: Na'tional Park' Serv"ice Pronunciation: [key] — U.S. Govt. U.S. Govt. a division of the Department of the Interior, created in 1916, that administers national parks, monuments, historic sites, and recreational areas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. national park National Progressive party 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