octet

noun5

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 byte of eight bits. Abbreviation: o
4. •
   A composition for such a group of musicians.
5. •
   (rare) A group of three bits, representing any of eight possible values.

   • This is done by breaking down each set of permissions (user, group, and other) to represent an octet. — 2003