What does arcturus mean?
The definition of arcturus
Arc*tu”rus, n.
Etym: [L. Arcturus, Gr. Arctic.] (Anat.)

A fixed star of the first magnitude in the constellation Boötes.

Note: Arcturus has sometimes been incorrectly used as the name of the constellation, or even of Ursa Major. Canst thou guide Arcturus with his sons [Rev. Ver.: “the Bear with her train”]. Job xxxviii. 32.