%ciborium%

‖n.: pl. Ciboria [ LL., fr. L. ciborium a cup, fr. Gr. &unr_; a seed vessel of the Egyptian bean; also, a cup made from its largeleaves, or resembling its seed vessel in shape. ] 1. (Arch.) A canopy usually standing free and supported on four columns, covering the high altar, or, very rarely, a secondary altar. [ 1913 Webster ]

2. (R. C. Ch.) The coffer or case in which the host is kept; the pyx. [ 1913 Webster ]