It's kind of weird that “nerd” was such a major insult when we were growing up. The insinuation was devastating. But t he word “nerd,” if we want to get granular, can actually be pretty damn positive. According to the Oxford dictionary, the term is defined as follows: "1. a person who is extremely enthusiastic and knowledgeable about a particular subject, especially one of specialist or niche interest. "the executive is an unabashed film nerd" 2. DEROGATORY an unfashionable person who lacks soc…