- 1. n. A plane figure of eight sides and eight angles. Source: opted
- 2. n. Any structure (as a fortification) or place with eight sides or angles. Source: opted
- 3. n. an eight-sided polygon Source: wordnet
- 4. 1. (Geom.) 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
- 5. n:100 n. an eight-sided polygon Source: ecdict
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octagon
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