The phrase "editor friend" refers to someone who is both an editor and a friend. It suggests that the person not only helps edit or improve your work but also has a personal connection with you.
Sentences with «editor friend»
I have one editor friend who couldn't keep up with the demand because she was so good at this, turning things around quickly. (writtenwordmedia.com)
At a party last week, a fashion editor friend made a great point. (fashionista.com)
Have at least a few writer / reader / editor friends critique your query letter honestly. (rebeccaberto.com)