[mucus] This photo is in the public domain. It was taken in 1920. It is also in the hands of the U.S. Federal Government. Credit - National Air and Space Museum, Smithsonian Institution (SI Neg 85-12330) ... Found on http://en.wikipedia.org/wiki/Booger_(mucus)
any person or thing: That shark was a mean-looking booger. Paddle the little booger and send him home. · a piece of dried mucus in or from the nose. · bogeyman. · any ghost, hobgoblin, or other frightening apparition. Found on https://www.infoplease.com/dictionary/booger