half blood prince
"1) "dude, who knew snape was the half blood prince eh?"  2) "omg half blood prince is out in 3 days
1)writer of a book that [harry potter] uses to do well in his potions class
""1) "dude, who knew snape was the half blood prince eh?"  2) "omg half blood prince is out in 3 days" What is the definition of "half blood prince"?