Definitions:
a large bowl-shaped cavity in the ground or on a celestial object, typically one caused by an explosion or the impact of a meteorite

a large bowl used in ancient greece for mixing wine.

form a crater in (the ground or a planet)

a small and faint southern constellation (the cup), between hydra and leo, said to represent the goblet of apollo.

used with preceding greek letter or numeral to designate a star in the constellation crater