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 outfit.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a plastic sheath for holding pens in a pocket, protecting the cloth from ink. (This is the classic symbol of a bookish nerd.) A real nerd wears a nerd pack in the pocket of a dirty shirt.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.