pyxis

noun pl. pyx′i·des′-si dēz′

1. a vase with a cover, used by the ancient Greeks and Romans
2. a small box or case
3. Bot. a dehiscent, dry fruit whose upper portion splits off as a lid, as the fruit of a pimpernel

Etymology: ME < L: see pyx

noun

a S constellation between Puppis and Antlia

Etymology: ModL, short for Pyxis nautica, mariner's compass < L pyxis: see pyx