Definition of "quartet"

quartet

/kwɔː(ɹ)ˈtɛt/

noun
plural quartets
1. A group of four people or things, particularly
  Quotations
  The last of the quartet of American fighter pilots to join the RAF before the war was Cyril 'Pussy' Palmer, who was born in Cleveland, Ohio, in March 1918.
  2015, Tony Holmes, American Eagles: US Fighter Pilots in the RAF 1939-1945
  1. (music) A group of four musicians who perform classical music together.
  2. (music) A musical composition in four parts, each performed by a single voice or instrument.
  3. (music) A group of four singers, usually males, who sings together in four-part harmony.