Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. architectural elements
7. [architectural elements by building type]
8. religious building fixtures
9. Christian religious building fixtures

Anotations

Scope note:

Stone basins with a drain, generally set near the sacristy, often in a niche. The piscina was used for the celebrant's ablutions and for washing the sacred vessels during the Mass. Piscinae drain into the ground, and some have a small upper shelf that serves as a credence. For pools in Roman or Medieval homes or public sites, use "piscinae (pools)."