Definition of Arcturus in English:

Arcturus

Line breaks: Arc|turus
Pronunciation: /ɑːkˈtjʊərəs
 
/
Astronomy
The fourth-brightest star in the sky, and the brightest in the constellation Boötes. It is an orange giant.

Origin

from Greek arktos 'bear' + ouros 'guardian' (because of its position in line with the tail of Ursa Major).

Definition of Arcturus in:

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Word of the day hubris
Pronunciation: ˈ(h)yo͞obris
noun
excessive pride or self-confidence