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A bad-ass soldier from the video game "Halo: Combat Evolved". Usually seen in green MJOLNIR Mark-V Armor. Synonymous with 1337.
The Master Chief can run at up to 55 kilometers per hour. He is the embodiment of 1337ness.
by Araquiel May 28, 2004
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Jan 15 Word of the Day
The Nussy, or the โ€œnose pussyโ€, if you will, was discovered during the corona virus pandemic of 2020. People that had to be tested for Covid-19 had to have their nose swabbed right where the brain connects, which often led to people rolling back their eyes and gagging.

A nose-swab-fetish developed from this, because we, as humans, ruin everything.
โ€œOh fuck yeah, swab my nussyโ€

Sir, please, I went to medical school

by Pogoextreme December 25, 2020
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Master Chief is the name of the rank that John is, his spartan number is 117. He is the playable character in both Halo: Combat Evolved and Halo 2. Hes a badass character, hes so badass that he just has to walk on screen and you can feel the badassness radiating from his badass aura of badassness. He doesn't need to walk on screen and snap some necks or crack some skulls to look like a badass, he just walks on screen. Okay, enough of my undying love for the most badass video game character.
by Vorhees July 19, 2006
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The protagonist from the Halo Series by Bungie. He could totally kick you ass. And you know it.
Master Chief kicked the Flood's ASS in Halo 1, 2, and 3.
by Dayonic November 03, 2007
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If you're playing Xbox Live, and you just so happen to come across someone with the name "Master Chief," you've been blessed.
Now, there are plenty of people that go under that name and then add excrutiatingly long numbers, but if you see the original "Master Chief," consider yourself a child of good luck.
I was playing Halo 2 yesterday and I met the original Master Chief, so I think I'll go gambling today.
by CyberElectric December 09, 2004
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The most badass videogame character. Ever. Commenly seen with a MA5B 7.62mm Assault Rifle and using it to blow the hell outta Covanent aliens. Wears a uber-pimp set of green armor. Never see his face.
Master chief will blow the hell outta those dumb bugs, untill he has nothing left to shoot them with. Then, he will strangle them with their own living guts. -Sgt Johnson on Legendary
by OneOneSeven February 11, 2004
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1)A very quiet character who single-handedly committed ridiculous genocide to an intelligent alien race, while never saying more than a few words.
2)Your typical mass murderer.
hello I am master chief lolololoololololololllollolololol

do u even care that you decimated thousands of grunts, jackels, elites, and hunters who were all brainwashed from the dogmatic "prophets?"

by pnguyen December 14, 2007
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