Often in the form Octagon: the arena for mixed martial arts.
A polygon with eight sides and eight angles.
An Asian form of mitrailleuse.
The larger part of an organism, composed of tissues that perform similar functions.
A government organization; agency; authority.
A musical instrument that has multiple pipes which play when a key is pressed (the pipe organ), or an electronic instrument designed to replicate such.
A body of an organization dedicated to the performing of certain functions.
An official magazine, newsletter, or similar publication of an organization.
The penis.