A (small) box; a casket, a coffret.
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.
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.
To enclose (something) in a box or other container; specifically, to place (a deceased person's body) in a coffin; to coffin, to encoffin.
To deposit (sample coins) in a pyx; (by extension) to test (such coins) for the fineness of metal and weight before a mint issues them to the public.
A sturdy box with a lock for storing valuables.