Definition of payload noun from the Oxford Advanced Learner's Dictionary
payload
noun
ˈpeɪləʊd ˈpeɪloʊd
(technical)
1the passengers and goods on a ship or an aircraft for which payment is received2the goods that a vehicle, for example a lorry/truck, is carrying; the amount it is carrying3the explosive power of a bomb or a missile4the equipment carried by a spacecraft or satellite