Hadar

From Arabic حضار. In w: Star-Names and Their Meanings, Richard Hinckley Allen writes, "Ḥḍar and Wazn, Ground and Weight, seem to have been applied without much definiteness to α and β of this constellation, and to stars in Argo, Columba, and Canis Major, probably on account of their proximity to the horizon; the meridian altitude of β, 1000 years ago at Cairo, is 30° of north latitude, being only 4°. Hyde, however, said that α and γ were the stars referred to by these Arabic titles."

However, the word حضار does not normally mean "ground" but settled land.

Hadar

1. The second brightest star in the constellation of Centaurus, Beta Centauri

   Synonym: Agena

• Darha, Radha, Darah

From Arabic حضار.

Hadar f

1. Hadar, the second brightest star in the constellation of Centaurus

   Synonym: Agena