Gotta love German...

[den_down_unda]

The German word for Half-Blood Prince is Halbblutprinz, as in Harry Potter und der Halbblutprinz. You have to love German. There's a word for everything, and if there isn't, well, they'll make one up by cramming three words together.

Only thing cooler would have been if it were Halbblutherzog, but you can't have everything. (And I think the literal translation of Herzog is more along the lines of Grand Duke or Sovereign Prince anyway.)