If someone rigs an election, a job appointment, or a game, they dishonestly arrange it to get the result they want or to give someone an unfair advantage.

A rig is a large structure that is used for looking for oil or gas and for taking it out of the ground or the sea bed.

A rig is a truck or lorry that is made in two or more sections which are joined together by metal bars, so that the vehicle can turn more easily.