HALO 

HALO STANDS FOR:
HIGH ALTITUDE LOW OPENING
It is a difficult parachuting technique involving extended free fall(usually around 2 minutes at 120 knots) with the usuage of a breathing apparatus.
USUALLY USED TO INSERT SPECIAL FORCES SOLDIERS INTO DENIED OR HOSTILE TERRITORY.
AND, NO THE NAME FOR THIS DID NOT STEM FROM THE GAME, IT HAS BEEN AROUND LONGER THAN THE GAMER CREATERS HAVE BEEN ALIVE.

SGT. Martin braced himself in aniticipation for the treacherous HALO DIVE into his missions target area.

HALO by Jamie Moorhouse April 2, 2008

Halo 

1.A mythical ring of gold or light that floats a few inches over an Angels head. Can be seen in the cartoon DBZ.

2.A large Metal ring in space, spanning 10,000KM in diameter and 22.3 KM thick. Was constructed by Forerunners to house the parasitic plague called the Flood. SPins to generate gravity.

1.Hey, is that a Halo on your head?

2."Were all that's left.Halo,it's finished" -Cortana

Halo by Michael Angelo June 23, 2004

halo 

A slang term for a used condom

Every morning there's a halo hanging from the corner of my girlfriend's four post bed. -- "Every Morning" by Sugar Ray

halo by hempick June 27, 2005

Halo 

I've noticed a lot of people are assholes, and give biased definitions saying it either "r0xxorzez all t3h othar games!!11!!1!111" or "is a total fag noob shitty game" This is an unbiased definition of HALO: Combat evolved:
1:n.A first-person-shooter game for the Microsoft X-box in which the main protagonist Master Chief and his A.I. guide Cortana fight through a giant alien construct (the halo) in space alongside marines to destroy it before it eradictes all life in the universe. To further complicate things, the Covenant, a hierarchy of aliens bent on killing humans because they are believed to be inferior, have landed on the ring and believe it to be a sacred artifact, so they naturally try to defend it. Also, a parasitic plague known as the flood have been contained on the ring, and are released by the covenant. An evil and unsatiable appetite for sentient flesh drives the flood to infect and destroy all biological matter in the universe, and the Master Chief must get through them too to destroy the ring (which leads to a couple of the most annoying levels ever in game history). Halo and it's successor, HALO 2, have active online communities, as they both sport a form of online play.
2.adj.High Altitude Low Opening jump from a plane

1) Halo is an addictive fps (In my own opinion) for the Xbox. Many people say it's "linear" "repetitive" "slow" or "has crappy graphics", or that "people who think halo rules don't play fps games". I love halo, along with games like: Half-life (1 and 2), Far-Cry, The Medal of Honor and Call of Duty series, and Resistence: Fall of Man to name a few. Furthermore, people are too hooked on free-roam games with gorgeous graphics, without it occurring to them that maybe if a game has good gameplay (which i personally believe it does), then it really doesn't matter. God of War has linear gameplay with somewhat repetitive enemies, but the gameplay is so good you overlook that. People need to think more.
2. Alpha team made a HALO jump from the plane

Halo by Lewk the Dewk May 12, 2007

Halo 

A series of video games, books, novels, and other media that is heavily based on the character known as Master Chief. Although there are some games that do not have Master Chief in them, every Halo game currently in existence from 2010 back has referenced him in one way or another. The main enemy in the Halo games are The Covenant, a series of aliens who've come to take over every planet including Earth.

Thomas: "Dude, I'm going to go home and play Reach"

Nicholas: "Reach was okay, but I'm honestly a bigger fan of Halo Wars"

Dario: "You guys are both crazy, Halo 2 was the best of the Saga!"

Halo by Darioooooooooooo October 28, 2010

Halo 

That one game that is far better than call of duty, uses way more teamwork and takes far better skill.

Bro1: Dude I just reached 10th prestige on COD.
Bro2: Hey guess what nobody gives a fuck, come play halo.

Halo by yost28 January 15, 2012

halo 

A religious symbol ussually associated with the Bible and commonly used in paintings in the medieval era of saints etc.
~~~
A First Person Shooter for Xbox with an strong storyline, amusing physics, great multiplayer, and great controls. Slightly overrated.

The young girls heart was so pure you could practically see a halo over her head.

Halo, beer, and 16 people.

halo by Takun June 26, 2004