noun
Chinese "Ox" constellation (one of the 28 mansions)
Astronomy term; refers to the Chinese lunar mansion corresponding to parts of Capricornus and Aquila.
See also: 牛 (ぎゅう)
牛宿は二十八宿の一つで、秋の夜空に見える。
The Ox mansion is one of the 28 mansions and can be seen in the autumn night sky.
Refers to the same constellation in a more general or abbreviated context; 牛宿 is the full traditional name.
From Chinese astronomy; 牛 (ox) + 宿 (mansion/lunar station). The reading いなみぼし is a Japanese native reading for this constellation.