late 13c., "article of value used for adornment," Anglo-Fr. juel
, O.Fr. juel, jouel
"ornament, jewel" (12c.), perhaps from M.L. jocale,
from L. jocus
"pastime, sport," in V.L. "that which causes joy" (see joke
). Another theory traces it to L. gaudium,
also with a notion of "rejoice." Sense of "precious stone" developed early 14c.