WordWeb Online

1. Eight performers or singers who perform together
   - octet
    
2. A set of eight similar things considered as a unit
   - octet
    
3. Eight people considered as a unit
   - octet, eightsome
    
4. A musical composition written for eight performers
   - octet

Derived forms: octettes

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