Arc‐tu″rus (�), n. [L. Arcturus, Gr. � bearward, equiv. to �; � bear + � 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.
Job xxxviii. 32.