Nichers Posted in N Best definition Nichers Nichers is a name given to someone that resembles a slug. Most people don’t like Nichers, but every once in a while, you find one that you HAVE to like. Ew! Gross! Nichers! The fun sucking slug! How satisfied are you with the definition? Looking for Nichers meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 85 times.