pyx Riddle-Arnold Smith-Hall PYX pyxis -idis feminine. Q. pyx: pyxis, ĭdis, f. (πυξίς), also puxis (Scrib. Comp. 228), prop. a box of box-wood, then any box: Cic. Coel. 25: a golden pyx, Suet. Ner. 47.