Webster’s Revised Unabridged Dictionary · 1913
Arcturus
Arc·tu′rus (·tū·′rŭs), n. [L. Arcturus, Gr. Ἀρκτοῦρος bearward, equiv. to Ἀρκτοφύλαξ; ἄρκτος bear + οὖρος ward, guard. See Arctic.] (Anat.) A fixed star of the first magnitude in the constellation Boötes.
☞ 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.