(adjective)
fitted with a particular system of chains and ropes to control the sails of a ship;
e.g. The ship was finally fully-rigged and ready to sail.
(verb)
conducted, controlled, or manipulated something in a dishonest way in order to create
a particular situation, give one person/party an unfair advantage, or cause a particular result;
e.g. They had rigged the selection process in order to discriminate against some applicants.
(verb)
assembled and/or adjusted the equipment of a vehicle such as a ship or an aircraft to make it ready for use, for example provided a boat/ship with sails and the necessary system of chains and ropes to control them;
e.g. The pilots had rigged the plane and were ready for takeoff.
(verb)
broadly, set up some structure, equipment, or device in a hasty or temporary manner (often used as "rigged up");
e.g. They had rigged up an outdoor stage for the performance.