As an article, yes: "Luigi è il figlio mezzano" would be parsed as "Luigi is the middle son". But "Luigi è un mezzano" would sound as "Luigi is a pimp". Keep in

As an article, yes: "Luigi è il figlio mezzano" would be parsed as "Luigi is the middle son". But "Luigi è un mezzano" would sound as "Luigi is a pimp". Keep in mind that this is a bit archaic anyway so I suppose that someone in their twenties would probably have to check a dictionary for it, but I am older than that so it looks a bit odd to me.