national flag(n = noun.communication) ensign - an emblem flown as a symbol of nationality;
is a kind of flag, allegory, emblem

acadia national park, air national guard, american flag, arches national park, army national guard, badlands national park, battle flag, big bend national park, biscayne national park, black flag, blue flag, bryce canyon national park, canyonlands national park, capitol reef national park, carlsbad caverns national park, channel islands national park, code flag, confederate flag, crater lake national park, denali national park, everglades national park, federal national mortgage association, flag, flag captain, flag day, flag down, flag of truce, flag officer, flag rank, flag smut, flag smut fungus, flag stop, flag waving, 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, iraqi national congress, irish national liberation army, isle royal national park, katmai national park, kenai fjords national park, kings canyon national park, knight of the square flag, kobuk valley national park, lake clark national park, lassen volcanic national park, mammoth cave national park, mesa verde national park, mount ranier national park, myrtle flag, 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 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 park service, 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, nautical signal flag, north cascades national park, olympic national park, palestine national authority, palestinian national authority, palmetto flag, petrified forest national park, pilot flag, pirate flag, platt national park, real gross national product, red flag, redwood national park, rocky mountain national park, royal national eisteddfod, sequoia national park, serengeti national park, shenandoah national park, signal flag, soft flag, southern blue flag, sweet flag, theodore roosevelt memorial national park, u.s. national library of medicine, union flag, united states national library of medicine, virgin islands national park, voyageurs national park, water flag, wheat flag smut, white flag, wind cave national park, wrangell-st. elias national park, yellow flag, yellow water flag, yellowstone national park, yosemite national park, zion national park