1. A group of particularly ugly women. 2. A collection of unattractive females often seen together, or working together for a common goal. See Muntville Mafia, Minger Zoo and Club Munterville. Inspired by the popular song 'Monster Mash' by Pickett and Capizzi.
I was working in the lab late one night, when my eyes beheld an eerie sight. For the munters, from their slabs, began to rise. And suddenly to my surprise, they did the mash. They did The Munter Mash.