Definition of riggings:
(n) :
Dress; tackle; especially (nautical), the ropes, chains, etc., that support the masts and spars of a sailing vessel, and serve as purchases for adjusting the sails, etc.
(n) :
Similar supporting material used for construction work, or in film, theater, etc.
(n) :
(Japanese fiction, moe anthropomorphism) The shiplike mechanical components and weaponry attached to a shipgirl.