You searched for: “pentagon
pentagon, Pentagon
1. A shape with five sides, usually of equal length, and angles greater than 90°.
2. A two-dimensional geometric figure formed of five sides and five angles.
3. When capitalized, it is the government building in Washington, D.C. with five sides which serves as the headquarters of the United States Department of Defense.

The Pentagon houses the main offices for the armed services of the United States and the military personnel who work in this building.