chaton noun2 •Collet, bezel (around a jewel, on a ring).Another ring, from the same locality, with a cross of simpler form engraved on the chaton was found attached to a chain. — 2012 •chaton (movement component: a circular piece of metal inserted in a round hole, in which a ruby is inserted. The ruby is used as bearing for the pin (or pivot) of a shaft of a wheel) formschatons