- The box, case, vase, or tabernacle, in which the host is reserved.
- 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.
- The box in which the compass is suspended; the binnacle.
- Same as Pyxis.
- To test as to weight and fineness, as the coins deposited in the pyx.