noun A small, usually round container used to hold the host (“consecrated bread or wafer of the Eucharist”), especially when bringing communion to the sick or others unable to attend Mass.
noun A (small) box; a casket, a coffret.
noun A box used in a mint as a place to deposit sample coins intended to have the fineness of their metal and their weight tested before the coins are issued to the public.
noun A compass used by sailors.
verb To place (the host) in a pyx.
verb To enclose (something) in a box or other container; specifically, to place (a deceased person's body) in a coffin; to coffin, to encoffin.
verb To deposit (sample coins) in a pyx; to test (such coins) for the fineness of metal and weight before a mint issues them to the public.