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.
  3. The box in which the compass is suspended; the binnacle.
  4. Same as Pyxis.

v. t.

  1. To test as to weight and fineness, as the coins deposited in the pyx.