Very large in size. Larger in size than others of the same kind. Large in quantity or number: A great throng awaited us. See Synonyms at large. Extensive in time or distance: a great delay. Of outstanding significance or importance: a great work of art. Remarkable or outstanding in magnitude, degree, or extent: a great crisis. Chief or principal: the great house on the estate. Superior in quality or character; noble: "For he was great, ere fortune made him so\u201d ( John Dryden). Powerful; influential: one of the great nations of the West. Eminent; distinguished: a great leader. Grand; aristocratic. Informal Enthusiastic: a great lover of music. Informal Very skillful: great at algebra. Informal Very good; first-rate: We had a great time at the dance. Being one generation removed from the relative specified. Often used in combination: a great-granddaughter. Archaic Pregnant. One that is great: a composer considered among the greats. Music A division of most pipe organs, usually containing the most powerful ranks of pipes. Music A similar division of other organs. Informal Very well: got along great with the teacher.