what is a vermin
Vermin (comics) Vermin (Edward Whelan) is a fictional character, a supervillain appearing in American comic books published by Marvel Comics.
Definition of vermin for English Language Learners. : 1  small insects and animals (such as fleas or mice) that are sometimes harmful to plants or other animals and that are difficult to get rid of. : 2  very bad, unpleasant, or offensive people.