noun
Lyra; the Lyre
The constellation Lyra, named after the lyre, a stringed instrument. In Japanese, it is associated with the koto (琴).
こと座には、ベガという明るい星があります。
In the constellation Lyra, there is a bright star called Vega.
夏の夜空にこと座を見つけるのは簡単です。
It is easy to find Lyra in the summer night sky.
From 琴 (koto, a traditional Japanese stringed instrument) + 座 (constellation). The constellation is named after the lyre, which is likened to the koto.