Here's a breakdown:
* The "water" part: Aquarius is associated with water due to its placement near the celestial equator, where the sun appears to be in the zodiac sign of Aquarius during the rainy season in many parts of the world.
* The "carrier" part: The constellation's main stars form a loose "Y" or "V" shape, which can be interpreted as a pitcher or jar from which water is being poured. However, these stars aren't particularly bright, so they're not easy to spot without some experience.
Overall, Aquarius is more of a diffuse constellation with a more conceptual shape than a clearly defined one.