1. Any group of people who are similar in their social awkwardness or ineptitude and obsession or preoccupation with something not generally popular with the majority of people. I had a lot of varied interests in high school. I played a few different sports, I smoked pot with some of the outsiders, and I hung out with a nerd pack who were really into video games.

2. A thin plastic sheath that fits into the breast pocket of one's shirt to hold pens and other small instruments and protect the pocket from stains or tears. I know I look pretty doofy with my nerd pack in my shirt, but I need so many different colored pens throughout the day that it really is an essential part of my work.