Top definition
The pentagonal building serving as the headquarters of the US Department of Defense, near Washington, DC. The Pentagon's unique shape makes it a highly efficient office building. Although the Pentagon has 3,705,793 square feet (1,129,526 meters) of office space, it is possible to reach most points in the building within 10 minutes, a remarkable architectural achievement. In a building which coordinates the armed forces of the United States along with organizations responsible for intelligence and security, workers often need to be able to access each other quickly.
The idea of the Pentagon was conceived in 1941, when Brigadier General Brehon Sommervell was trying to solve the problem of limited space for the Department of Defense, a serious issue in the Second World War. It was agreed that a new building was needed, and a groundbreaking ceremony took place on 11 September, 1941. It took just two years to complete the building on former marshlands along the outskirts of Washington, and the Pentagon was quickly filled with communications equipment and staff to coordinate the Department of Defense.
by Dancing with Fire September 06, 2012
Get the mug
Get a Pentagon mug for your barber Yasemin.
Noun. Kpop boy group that debuted on October 10th, 2016 (10/10) and is produced by entertainment company Cube. Consists of ten members: Jinho, Hui, Hongseok, E.Dawn, Shinwon, Yeo One, Yan An, Yuto, Kino, and Wooseok.

The group debuted with the song Gorilla and is currently very active in both Korea and Japan. They also had a variety show called Pentagon Maker to showcase their skills before debut. Their fandom name is called "Universe."
Universe: Wow, I love Pentagon so much! They have so much fan service!
International Universe: Wow, I can't wait until Pentagon comes to my country for a concert and then leave the very next day!
via giphy
by kinotherapy December 11, 2017
Get the mug
Get a Pentagon mug for your bunkmate Sarah.
1. Where Bush's monkeys sit and try to pronounce the names of the countrys they are bombing

2. A five sided shape with five corners

3. What wannabe Satanists draw on their walls, genitals and on the ground in white chalk
1. There's a mass without roofs. Let's bomb 'em!

2. This shape has five sides. Lets go for a walk and discuss the matter further

3. Nah, only joking. I'm not another member of the greedy society. Brothers
by The G November 21, 2003
Get the mug
Get a Pentagon mug for your cousin Georges.
The Pentagon is the headquarters of the United States Department of Defense, located in Arlington County, Virginia, across the Potomac River from Washington, D.C. As a symbol of the U.S. military, The Pentagon is often used metonymically to refer to the U.S. Department of Defense
by Game mode 0 November 28, 2016
Get the mug
Get a Pentagon mug for your grandma Helena.
The most down ass drinking group in the world. Members include The Dr., Your Royal Nastiness, Brando, Sleezy Lee, and 40 Hands. They have set out incredible records with beerpong and "stats."
"Ah shit the Pentagon's here? Hide the beer and the girls!"
by 40 Hands August 27, 2006
Get the mug
Get a Pentagon mug for your Uncle Paul.
like being a square, but you are stupid 5 times in a row instead of 4.
Mike: Wow, what a square!
James: No, she's a pentagon, she has been way more stupid that.
by Cheesey Wackjob February 20, 2011
Get the mug
Get a pentagon mug for your coworker Josรฉ.
Five male individuals jerking each other off in the formation of a pentagon. Each participant's arms are positioned on the two adjacent erect penises, while reciprocating motion is perfomed to stimulate all of the penises.

Although Pentagon's as a religion first appears in Greek records during the Hellenistic period and the earliest mention of 'The 5 erect penises' is inscribed on the Merneptah Stele dated 1213โ€“1203 BCE, religious literature tells the story of the pentagon going back at least as far as c. 1500 BCE. The Pentagon became widespread throughout histroy, beginning with the Cock conquest and continued on a much larger, firmer scale with the Penta-quest.
"That's a nice firm handshake, that'd be perfect in our pentagon"

"Alright class, split into groups of 5. If you know what I mean ;)"

"I'd do anything for a chance to stand in the middle of that raging pentagon"
by PentaKyle June 24, 2015
Get the mug
Get a Pentagon mug for your father-in-law James.