payload

ot noun

1. That part of a cargo that produces revenue.
2. The total weight of passengers, crew, equipment and cargo carried by an aircraft or spacecraft.
3. That part of a rocket, missile, propelled stinger or torpedo that is not concerned with propulsion or guidance, such as a warhead or satellite.
4. The functional part of a computer virus or another type of malware program, rather than the part that spreads it.