I don't remember the terminology.
I know Mr. Justice Iacobucci because we worked on a committee together, which was the selection committee that chose the head of the Truth and Reconciliation Commission. I was aware of him because I attended the University of Toronto when he was dean of law and so on.
If I used the phrase, I think it was intended to convey that I knew Mr. Iacobucci by reputation and somewhat personally, and he has an extremely tough legal mind.