Octagon
Pronunciation : Oc"ta*gon
Part of Speech : n.
Etymology : [Gr. cctogone.]
Definition : 1. (Geom.)
Defn: A plane figure of eight sides and eight angles.
2. Any structure (as a fortification) or place with eight sides or angles. Regular octagon, one in which the sides are all equal, and the angles also are all equal.
Source : Webster's Unabridged Dictionary, 1913