Wooden rattle usually of three sheets, used in the Middle Ages by lepers to announce their presence in inhabited places, in order to avoid contact with men and obtain food without contact or interrelation.
In Colombia you mean mandibular, maxillary. It is also junk, pileup, Hulk, viejera, gadget. In Chile is geezer, viejera, old, old.
Ratchet: Ship's sailing round of high Board, specialized in transport of heavy loads and long journeys.