1A small and faint southern constellation (the Compasses), in the Milky Way next to Centaurus.

1. 1.1as genitive Circini /ˈsəːsɪni/ Used with preceding letter or numeral to designate a star in the constellation Circinus.
   与其前面的字母或数字连用以标记该星座中的星圆规星座的
   the star Alpha Circini

   圆规座α星。