A comp is another term for the "working man". simply showing up for work on a daily basis with no ambition to do better things with their life and eventually become independently wealthy. Comps can be found at local watering holes drinking budlights on weekdays in order to drown their sorrows.
sucka "yo man, lets work ridiculous hours for a blue collar salary for 40 years thats what lifes all about." Person with ambition: "Get the fuck outta hea, I will not go down as a comp". sucka: "Whatever man ill be kellies."
short version of the word compressor which is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor.