a small conspicuous constellation in the S hemisphere lying in the Milky Way near Centaurus. The four brightest stars form a cross, the longer arm of which points to the south celestial pole Formal names Crux, Crux Australis
2.
(Austral) the flag flown at the Eureka Stockade
Southern Cross in Science
Southern Cross
(sŭ'ərn) A constellation in the polar region of the Southern Hemisphere near Centaurus.