A device created and used by the darkest of Dark witches and wizards, those seeking immortality. In a horcrux, one conceals part of the soul to prevent death. In order to do so, the soul must be torn into two pieces: one for the horcrux, and one that remains in the physical body. To create a horcrux, one must commit "the supreme act of evil" — murder, which "rips the soul apart." They must then perform a special spell (the incantation of which has not been revealed) which will harness their soul, allowing them to place it into an object at will.

The act of creating a horcrux is considered to be dangerously unnatural.
He-Who-Must-Not-Be-Named has several horcruxes that are hidden; and only when they are all located can the Dark Lord be defeated.
by Markie Mark July 31, 2005
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a type of dark magic where someone can pull apart their soul into any number of pieces and place the parts in any object such as a book or a ring. The key to ripping your soul into pieces in murder. A horcrux allows the maker to become immortal until all of the horcruxes are destroyed.
Lord Voldemort ripped his soul into 7 pieces to become immortal so Harry, Ron, and Hermione must find the horcruxes to kill Voldemort.
by Half-Blood Prince November 27, 2010
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A horcrux is an object in which one stores part of one's soul. When a witch or wizard murders someone they can use very dark magic and split their soul in two or maybe even more numbers and store part of their soul in an object which will allow them to be virtually immortal because while their physical body may be killed, their soul remains. In order to kill a person with a horcrux you must both kill the person and destroy their horcrux (or horcruxes) The horcrux can be a dark object, animal or possibly even person that has some meaning to the person who it belongs to (however they object does not necessarily need to have meaning to the person.)
Harry Potter must find and destroy all of Voldemort's horcruxes. After Harry has done this he can kill Voldermort, the final and ultimate horcrux.
by iloveharrypotter!!!!! July 25, 2005
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When a man spreads himself too thinly on dating apps, leaving parts of his soul in various young women
"What's Adrian upto?"
"Hes just talking to Amy,Beth,Marie,Katie,Elizabeth,Kirsty,Tammie,Sophie,Sammie,Tracey,Margery...."
"Oh ok, I get it. He's Horcruxing!"

Adrian has been horcruxing too much recently - he is a shell of a man
by TheRealHorcruxer November 16, 2019
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Horcrux

Wasting something valuble or precious for nothing. Usually pretaining to video games or RPGs.
DUDE! I just beat that boss and horcruxed my last potion, two minutes later I get ambushed by a group of orcs and die! Gaaah!
by Pr4wn3r 1337x0rx September 26, 2005
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The act of spreading oneself too thinly.
I've totally been horcruxing lately.
by Voldomortus February 7, 2012
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In response to an annoyingly moody person
Ron: "I saw you two the other night..."

Hermione: "Take off your horcrux and shut the eff up!"
by Tubesular November 20, 2010
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