WordWeb Online

1. Seven performers or singers who perform together
   - septet
    
2. A set of seven similar things considered as a unit
   - septet
    
3. Seven people considered as a unit
   - septet, sevensome
    
4. A musical composition written for seven performers
   - septet

Derived forms: septettes

Type of: assemblage, composition, gathering, musical composition, musical group, musical organisation [Brit], musical organization, opus, piece, piece of music, set