Half Blood 

Half Blood is a term for a witch or wizard that has 1 magic parent and 1 Muggle parent. Most of the wizarding world is either made up of half bloods or muggle-borns. There is no derogatory term for half bloods like there is one for muggle-borns (mudbloods). So the purebloods that think they are better than everyone else, can't call them a bad name.

Seamus: im half-and-half. dad's a muggle. mum's a witch.

Dean: yeah im half blood. my mum's a muggle and my dad's a wizard.

Half Blood by gryffindorseeker16 December 1, 2011

Half Blood 

Someone who is half descended from one race.

Dave's mother is Russian, and his father is Canadian, so he is a half blood.

Half Blood by DuncanD October 8, 2011

Half Blood 

A Half Blood is the stage inbetween a boner and a floppy.

"Damn, that ass just gave me a Half Blood"

Half Blood by qwertywtfbbqomg May 4, 2005

Half-Blood Fan 

Someone who think they're a Harry Potter fan even though they haven't read any of the books.

Pureblood: Have you read the books?
Half-blood: Why bother when they just make them into movies? How different can they be?
Pureblood: Get away from me, Half-Blood fans.. pfft.

Half-Blood Fan by MissMalfoy July 19, 2009

Half Blood Prince 

Half Blood Prince(HBP) is the 6th book in the "Harry Potter" series. It is the second to the last, and by far has made a bigger scene then the previous ones.

Friend 1:Dude i just read Harry Potter book 5
FRiend 2: Well Half BLood PRince is coming out so you can keep your pants on.

Half Blood Prince by Luke F July 27, 2005

Half Blood Prince 

Severus Snape, former Head of Slytherin House at Hogwarts School of Witchcraft and Wizardry

"Not Snape again!" Harry Potter

Half Blood Prince by Hermione Granger August 25, 2005

Half Blood Prince 

The Half Blood Prince is a former student at Hogwarts who has written his methods in a potions book which falls into the hands of Harry. It teaches him spells such as Sectumsempra, and methods such as the bezoar antidote.

Snape is the half blood prince.

Half Blood Prince by Davado August 31, 2005