- a sleeveless outer vestment worn by the celebrant at Mass.
c.1300, cheisible, from O.Fr. chesible (Mod.Fr. chasuble), from M.L. cassubula, from L.L. *casipula, from L. casula, dim. of casa "cottage, house" (see casino), used by c.400 in transf. sense of "outer garment."
"The bishop's envoy wore a black velvet chasuble over his dazzlingly white vestments, and the monk was resplendent in yards of samite and gilt embroidery."
- Connie Willis, Doomsday Book