octet

(noun) the cardinal number that is the sum of seven and one. Synonyms: eight, 8, VIII, eighter, eighter from Decatur, octad, ogdoad, octonary.

(noun) eight performers or singers who perform together. Synonyms: octette.

(noun) a set of eight similar things considered as a unit. Synonyms: octette.

(noun) eight people considered as a unit. Synonyms: octette, eightsome.

(noun) a musical composition written for eight performers. Synonyms: octette.