1A northern constellation (the Northern Crown), in which the main stars form a small but prominent arc.

1. 1.1as genitive Coronae Borealis" /kəˌrəʊni, -nʌɪ/ or "Coronae Used with preceding letter or numeral to designate a star in the constellation Corona Borealis.
   与其前面的字母或数字连用以标记该星座中的星北冕星座的
   the star R Coronae Borealis

   北冕座R星。