Noun

1. A group or set of eight of something.
2. A group of eight musicians performing together.

   An octet of waiters sang her "Happy Birthday".

3. A composition for such a group of musicians.
4. A byte of eight bits. Abbreviation: o
5. (rare) A byte of three bits.

Synonyms

• (group of eight): octuplet, ogdoad (rare)
• (computing: 8-bit byte): byte

See also

• duet
• nonet
• quartet
• quintet
• septet
• sextet
• solo
• trio