Octagon

Definition:

• (n.) A plane figure of eight sides and eight angles.
• (n.) Any structure (as a fortification) or place with eight sides or angles.

Compare octagon with other words:

hexagon vs. octagon

octagon vs. octahedron

octagon vs. octahedral

cone vs. octagon

octagon vs. octagonal

octagon vs. polygon

arena vs. octagon