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.
by Luke F July 10, 2005
Get the Half Blood Prince mug.
Severus Snape, former Head of Slytherin House at Hogwarts School of Witchcraft and Wizardry
"Not Snape again!" Harry Potter
by Hermione Granger July 29, 2005
Get the Half Blood Prince mug.
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.
by Davado August 6, 2005
Get the Half Blood Prince mug.
Your member, engorged with blood when you look at the curves of the now-legal Hermione.
Emma Watson gives me a "Half-Blood Prince".
by sxephill July 21, 2009
Get the Half-Blood Prince mug.
A semi-boner; a penis that is engulfed with half of the blood required for a complete erection.
I got this awkward half blood prince during math class today, but luckily it subsided when I concentrated really hard on David the Gnome.
by kduges September 13, 2005
Get the half blood prince mug.
1)writer of a book that harry potter uses to do well in his potions class. the half blood prince wrote the book in his youth at hogwarts, and is actually snape.

2)title of the long awaited 6th harry potter book by j.k rowling, released on the 16th of july 2005.
1) "dude, who knew snape was the half blood prince eh?"

2) "omg half blood prince is out in 3 days!"
by mintypingu August 10, 2005
Get the half blood prince mug.
The Half-Blood Prince (HPB) is:

1) The sixth of seven planned installments in the Harry Potter series of books.
2) A character in the Harry Potter universe.
1) "Hey, have you read Harry Potter and the Half-Blood Prince yet?"

2) "Can you believe (blank) was revealed to be the half-blood prince?"
by TeeveesBella September 1, 2005
Get the Half-Blood Prince mug.