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Từ điển WordNet v3.1 - WordNet Dictionary 
	
		  heavier-than-air craft   
  a non-buoyant aircraft that requires a source of power to hold it aloft and to propel it • Hypernyms: aircraft • Hyponyms: airplane, aeroplane, plane, autogiro, autogyro, gyroplane, drone, pilotless aircraft, radio-controlled aircraft, glider, sailplane, helicopter, chopper, whirlybird, eggbeater, orthopter, ornithopter, warplane, military plane
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