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