halO 

High Altitude Low Opening.

Commonly used by British SAS army forces to enter hostile or unfriendly territories.

halO by Diego June 22, 2006

Halo 

Triggered fuckin 10 year olds who their 14 year old brother shot up the school and played Halo

oH FoRtNiTe AnD RoBlOx Is Gay. Shut yo bitch ass up roblox was a stem system jn 1989. The gif is triggered halo kids who use tiktok

Halo by defenitionslmao September 3, 2020

Halo 

A game that peple enjoy insulting even though 80% of those halo haters have never played it.

"Halo is a good game" said the purple man
" I played that game at my friends house its gay" replied disgruntled kill zone fan.

Halo by Duck man drake January 7, 2006

Halo 

Okay, so I'm gonna try to make a concrete definition, not in favor of haters or fanboys. So, Halo is a video game, can we all agree on that? Good, here we go...

Halo:Combat Evolved (CE)

So, the main character, Master Chief, is a human/cyborg guy who's really tall. So, he's trying to save earth from a bunch of aliens, called The Covenant(weird name right?). Anyway, while he's slaughtering aliens, The Covenant released some kind of parasite call The Flood which basically turns everything into zombie type things. Master Chief blows the spaceship that the Flood are on. Oh yeah, most of the game takes place on a circle thing floating in space called the Halo(hence the name of the game). So, Master Chief saved the galaxy, right? Right?

Halo2

Okay, awww crap. I haven't played this game in a while. There's not much you need to know about this game besides Master Chief said 'FINISH THE FIGHT'(The thing they say every 5 minutes in Halo3)

Halo3

Chiefy's back and he's ready to kill more aliens. In Halo3, Chief (SPOILER ALERT!!) blows up Halo and escapes in a dramatic car getaway level. Chiefy also drives the car into a spaceship to fly away with his Starsky and Hutch-esque buddy Arby. Oh yeah, there was also a bitchy computer lady named Cortana who whines all the time throughout all 3 games. What a bitch.

Halo3: ODST

In this game you play as an ODST

Halo Reach

I only played the beta but I'll update this once it comes out.

Halo is a video game, and people get way too pissed when they die in it.

Halo by Audience of One May 6, 2010

halo 

In military it is an abbreviation for High Altitude-Low Opening. In terms of a para-jump special forces do it to avoid detection. Soldiers are dropped from a high altitude like 10,000 ft and freefall until they reach about 500 ft or below

halo by Anonymous February 11, 2003

Halo 

the only game series that ive had an unhealthy ubsetion with. without this game, red vs blue,my ending of all relationship with that bitch, and the loss of my job at wal-mart would have never happened.

best halo online kills ever forge, ect

Halo by OoOo101112 January 5, 2010

halo 

I think Halo is a pretty cool guy. eh kills aleins and doesnt afraid of anything.

Halo beat the Covenant and is often confused with Master Chief.

halo by prettycoolguy December 29, 2007