What is the meaning of 壺?

container or depression:

1. A pot or jar; a vessel or bottle.
2. A basin, as at the base of a waterfall.
3. A pressure point in acupressure or acupuncture.

A pot or jar; a vessel or bottle.

A basin, as at the base of a waterfall.

A pressure point in acupressure or acupuncture.

The core or heart of an issue.

Those who believe in the Family Federation for World Peace and Unification (formerly the Unification Church) and/or who are in close touch with this religion. (As this religion used to sell vessels to cast out evil spirits)

hu (ancient Chinese vessel shaped like a vase, usually used to store alcohol)

Source: wiktionary.org