lunchster Posted in L Best definition lunchster Something used in the transporting of lunch. Usually a box or paper bag. Dude, Tommy went over to the LUNCHSTERS and stole and ate all of our snack packs. What a fatty fat fat fat! How satisfied are you with the definition? Looking for lunchster meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 41 times.