PEN'TAGON, noun [Gr. five, and a corner.] 1. In geometry, a figure of five sides and five angles. 2. In fortification, a fort with five bastions.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI
Founding-era definition · Webster's 1828 American Dictionary
PEN'TAGON, noun [Gr. five, and a corner.] 1. In geometry, a figure of five sides and five angles. 2. In fortification, a fort with five bastions.
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