pentagon
/ˈpɛntəɡɑn/
noun
- A flat shape with five straight sides and five angles.
- The base of the sculpture was shaped like a pentagon.
- A pentagon has five sides of equal length in a regular pentagon.
- The children drew a pentagon for their geometry homework.
- The Pentagon: the building in Washington, D.C., that serves as the headquarters of the U.S. Department of Defense, often used to refer to the U.S. military leadership.
- She works as a civilian analyst at the Pentagon.
- The Pentagon announced new defense strategies this morning.
- Reporters gathered outside the Pentagon for the press conference.