national park service(n = noun.group) - an agency of the Interior Department responsible for the national parks;
is a kind of agency, authority, bureau, federal agency, government agency, office
is a part of department of the interior, doi, interior, interior department

acadia national park, advisory service, air national guard, amusement park, arches national park, armed service, army national guard, attestation service, badlands national park, belmont park, big bend national park, biscayne national park, bond service, bord service, bryce canyon national park, bus service, cable television service, canadian security intelligence service, canyonlands national park, capitol reef national park, car park, carlsbad caverns national park, central park, channel islands national park, chapel service, child welfare service, church service, civil service, civil service commission, civil service reform, committal service, community service, consulting service, crater lake national park, curb service, customs service, debt service, defense reutilization and marketing service, denali national park, dinner service, diplomatic service, distinguished service cross, distinguished service medal, distinguished service order, divine service, electronic information service, everglades national park, extension service, federal national mortgage association, federal protective service, federal security service, financial management service, foreign intelligence service, foreign service, full service bank, gas service, gates of the arctic national park, grand canyon national park, grand national, grand teton national park, great smoky mountains national park, gross national product, guadalupe mountains national park, haleakala national park, hawaii volcanoes national park, higher national diploma, hot springs national park, ill service, immigration and naturalization service, industrial park, intelligence service, internal revenue service, iraqi intelligence service, iraqi national congress, irish national liberation army, isle royal national park, katmai national park, kenai fjords national park, kings canyon national park, knight service, knight's service, kobuk valley national park, lake clark national park, lassen volcanic national park, length of service, lip service, mail service, mammoth cave national park, memorial park, mesa verde national park, military service, mount ranier national park, mungo park, national, national academy of sciences, national aeronautics and space administration, national anthem, national archives and records administration, national assembly, national assistance, national association of securities dealers automat, national bank, national baseball hall of fame, national capital, national censorship, national climatic data center, national debt, national debt ceiling, national flag, national geospatial-intelligence agency, national guard, national guard bureau, national holiday, national income, national institute of justice, national institute of standards and technology, national institutes of health, national insurance, national intelligence community, national labor relations board, national leader, national liberation army, national liberation front of corsica, national library of medicine, national monument, national oceanic and atmospheric administration, national park, national reconnaissance office, national rifle association, national science foundation, national security agency, national security council, national service, national socialism, national socialist, national socialist german workers' party, national technical information service, national trading policy, national trust, national volunteers association, national weather service, north cascades national park, olympic national park, oyster park, palestine national authority, palestinian national authority, park, park ave., park avenue, park bench, park commissioner, petrified forest national park, phone service, platt national park, postal service, power service, prayer service, public service, real gross national product, redwood national park, religious service, robert william service, rocky mountain national park, royal national eisteddfod, safari park, secret intelligence service, secret service, security service, selective service, selective service system, sequoia national park, serengeti national park, service, service abroad, service agency, service area, service book, service break, service bureau, service call, service cap, service ceiling, service charge, service club, service contract, service cutback, service department, service door, service elevator, service entrance, service fee, service firm, service hat, service industry, service line, service man, service of process, service program, service road, service routine, service staff, service station, service stripe, service tree, service uniform, shenandoah national park, social service, special air service, table service, tea service, telephone service, theme park, theodore roosevelt memorial national park, trailer park, u.s. national library of medicine, united states fish and wildlife service, united states marshals service, united states national library of medicine, united states postal inspection service, united states postal service, united states public health service, united states secret service, us fish and wildlife service, us marshals service, us postal inspection service, us postal service, us secret service, virgin islands national park, voyageurs national park, wild service tree, wind cave national park, wind park, wire service, wrangell-st. elias national park, yellowstone national park, yosemite national park, zion national park