pyx

pyx is a Noun

Definition:

[1] The box, case, vase, or tabernacle, in which the host is reserved.

[2] A box used in the British mint as a place of deposit for certain sample coins taken for a trial of the weight and fineness of metal before it is sent from the mint. Mushet.

[3] The box in which the compass is suspended; the binnacle. Weale.

[4] Same as Pyxis. Pyx cloth (R. C. Ch., a veil of silk or lace covering the pyx. Trial of the pyx, the annual testing, in the English mint, of the standard of gold and silver coins. Encyc. Brit.