The term 'not a big shot' can be summarized by the crossword solution 'PELLET, ' which is a six-letter word. A PELLET is a small, round object made of compressed material, such as sawdust, clay, or grain. It is often used as a form of ammunition in air guns and shotguns. Pellets are also used in industrial processes, such as pelletizing, which is the process of compressing materials into pellets. In summary, the term 'not a big shot' can be summarized by the crossword solution 'PELLET, ' which is a small, round object made of compressed material.