The Bayer designation Nu Canis Majoris (ν CMa / ν Canis Majoris) is shared by three star systems, in the constellation Canis Major:
They are separated by the different asterism in Chinese astronomy. ν¹ Canis Majoris was not any member of asterism. ν² Canis Majoris was stand alone in asterism 野雞 (Yě Jī), Wild Cockerel. ν³ Canis Majoris was member of asterism 軍市 (Jūn Shì), Market for Soldiers. Both of asterisms were lied in Well mansion.
References
Nu Canis Majoris Wikipedia(Text) CC BY-SA