noun Roman Catholic Church.
the plate held under the chin of a communicant to catch the Host if it should fall.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for communion plate
"Perhaps a chest for holding the communion-plate in old time," I said.The Seaboard Parish Volume 1|George MacDonald
A chalice, given by the Earl of Arundel in 1636, is among the communion-plate.The Cathedral Church of Canterbury [2nd ed.].|Hartley Withers
Is it not fitting that the communion-plate presented by Queen Caroline should be treasured here?American Sketches|Charles Whibley