Pyx n.  [Written also pix.]
  1. R. C. Ch. 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.
  3. Naut. The box in which the compass is suspended; the binnacle. --Weale.
  4. Anat. 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.