名詞 arcturus:

1. the 4th brightest star and the brightest star in the constellation Bootes; 36 light-years from Earth

Arc.tu.rus

n.（名詞）
The fourth brightest star in the sky and the brightest star in the constellation Boôtes, approximately 3' light-years from Earth.
大角星，牧夫座：天空中第四亮的星星，是牧夫星座最亮的星，距地球約3'光年

來源：
Middle English
中古英語
from Latin Arctôrus
源自 拉丁語 Arctôrus
from Greek Arktouros
源自 希臘語 Arktouros
arktos [bear] * see —tko-
arktos [熊] *參見 —tko-
ouros [guard, from its position behind Ursa Major] * see wer- 3
ouros [哨兵，從其在大熊座之后的位置] *參見 wer- 3