A bork is a download that was either interrupted or had files missing.
Ross, love you man but sorry have to do this. Have just seen this used to many time the wrong way. now someone has actually asked what it means and isn't getting the correct answer.
By the way what is a BORK?
Borked" means to be subject to unfair character attacks, or to be denied something based on unfair or untrue attacks unrelated to the topic at hand. The term is a reference to the 1987 appointment of Robert Bork to the supreme court, which was blocked in the Senate based on character attacks and politics rather than on qualifications or record