1 definition by Minivet
Someone who is regimented, driven, and business-minded, and who extends this mindset to organizing a social life.
"What's a reg? Well, Mitt Romney is the ultimate reg, people who show up to Dane Cook shows are regs, MBAs area almost uniformly regs, people who work in the marketing department of successful software companies are usually regs..."
by Minivet February 1, 2008