1. (

• quartet ,
• quartette ,

) four performers or singers who perform together ;

2. (

• quartet ,
• quartette ,
• quadruplet ,
• quadruple

) a set of four similar things considered as a unit ;

3. (

• quartet ,
• quartette ,
• foursome

) four people considered as a unit; "he joined a barbershop quartet"; "the foursome teed off before 9 a.m." ;

4. (

• quartet ,
• quartette

) a musical composition for four performers ;