White decorated cloth used to cover the ciboriumA covered vessel in the shape of a cup that is used to keep consecrated hosts in the tabernacle and to distribute them at communion. when it contains consecratedIn the Roman Catholic Church, the moment when, during the Eucharist, the bread and wine are transformed into the body and blood of Jesus, the so-called transubstantiation, by the pronouncement of the sacramental words. hosts in the tabernacleA small cupboard in the choir or in a specially designated chapel in which the consecrated hosts are kept..