n. [ L. Arcturus, Gr. &unr_; bearward, equiv. to &unr_;; &unr_; bear + &unr_; ward, guard. See Arctic. ] (Anat.) A fixed star of the first magnitude in the constellation Boötes. [ 1913 Webster ]
☞ Arcturus has sometimes been incorrectly used as the name of the constellation, or even of Ursa Major. [ 1913 Webster ]
Canst thou guide Arcturus with his sons [ Rev. Ver.: “the Bear with her train” ]. Job xxxviii. 32. [ 1913 Webster ]