In the video game series "The Legend of Zelda", the Master Sword is the sword you need to get in order to defeat Ganon, the porcinous King of Evil. The Master Sword may only be pulled from its pedestal by a righteous and courageous person. Link, an orphan boy who gets involved in the plot by happenstance/coincidence turns out to be this chosen person, and after proving himself to the gods, he is allowed the Master Sword and uses it to challenge Ganon.

The Master Sword is not only a sword though. In the storyline for "Ocarina of Time" it acted as a key, and its pedestal was the lock. Upon removing or inserting the sword from the pedestal, you could travel back and forward in time by about seven years. In the storyline for "A Link to the Past", the Master Sword shoots a magical energy beam out of the end when Link is full on life energy. In all storylines involving the Master Sword, major enemies (including Ganon) attempt to fire evil magic beams at Link intending to kill him. This is where the Master Sword comes in handy; it is immune to evil, and can be used to deflect the evil away from Link, most of the time back at its caster.

The Master Sword is commonly referred to as "The blade of evil's bane". Tragically, upon pulling the Master Sword from the pedestal, the ancient seal on Ganon's magic is broken, and he only becomes stronger. Such is the fate of Link, Ganon, and Princess Zelda.
"Its power is gone, and its edges are dull!"
- Ganon, taunting Link about the Master Sword
by ryan y February 17, 2006
Link's final sword that hacks the shit out of anything in it's path (usually).

When Link has completely full health it shoots beams.
Self explanatory.
by Guru Imakuni April 30, 2004
The most badass sword ever forged. Ganondorf shits himself every time he sees Link with it.
Everyone working for Ganon fears the Master Sword
by Ka-Bam37 February 6, 2010
every time Link beats gannnondorf he plunges the master sword into gannon's forehead
by nintendoshdowninja September 6, 2010
The final blade obtained by "The Hero," Link in the Legend of Zelda games. Naturally, it is the most powerful sword in the game. Video game fans often nickname their supposedly large penis "The Master Sword."
Nerd with a nasally voice:
"Hey gurl, snort, U wanna touch teh Master Sword? If U think U can properly wield it, of course, snort, snort, hehehehe."
by Doodleedoo<3 January 30, 2009
Master Sword is the most insanely badass sword in the Universe, forged and wielded by the Father of Conan, the Barbarian. The first three minutes of the seminal film, "Conan the Barbarian," highlight the actual forging of this phallic masterpiece. This very same sword was used by the Snake Lord (James Earl Jones, aka Darth Vader), to decapitate the Master's wife, aka Conan's Mother. This event began Conan's quest to conquer and destroy all who opposed him throughout the known Universe.

In this Age of Miracles, any man may attempt to wield the power of the Master Sword. Google "Albion Conan Master Sword" if you dare attempt to heft the real deal, fully sharpened.

No other sword, other than perhaps the Atlantean Sword (which Conan himself yields) can compare (including Excalibur, bitches!).
Conan's father: "For no one - no one in this world can you trust. Not men, not women, not beasts. This, you can trust."
Points to Master Sword

Master: "Conan, what is best in life?"

Conan: "To crush your enemies, to have them driven before you, and to hear the lamentations of the women."

Master: "This is Good."

Conan (later, about to face battle, swearing on his Atlantean Sword): "Crom, I have never prayed to you before. I have no tongue for it. No one, not even you, will remember if we were good men or bad. Why we fought, or why we died. All that matters is that two stood against many. That's what's important! Valor pleases you, Crom... so grant me one request. Grant me revenge! And if you do not listen, then to HELL with you!"

by R.N. Theory March 16, 2008