noun
Pisces (constellation); the Fish
Astronomical term for the zodiac constellation Pisces.
魚座は秋の夜空に見える星座です。
Pisces is a constellation visible in the autumn night sky.
noun
fishmongers' guild
Archaic term for a guild of fishmongers in historical contexts.
江戸時代には魚座と呼ばれる魚屋の組合があった。
In the Edo period, there was a fishmongers' guild called 魚座.
From 魚 (uo, 'fish') + 座 (za, 'constellation' or 'seat/guild'), literally 'fish constellation' or 'fish guild'. The astronomical sense is a direct calque of Western constellation naming; the archaic guild sense reflects a historical organization of fishmongers.