noun
Delphinus; the Dolphin
The constellation Delphinus, a small northern constellation. Used in astronomical contexts.
いるか座は夏の夜空に見える小さな星座です。
Delphinus is a small constellation visible in the summer night sky.
From いるか (dolphin) + 座 (constellation). The kanji 海豚 literally means 'sea pig', an old Chinese term for dolphin.