columbarium

noun

1. 1

   A large, sometimes architecturally impressive building for housing a large colony of pigeons or doves, particularly those of ancien regime France.

2. 2

   A pigeonhole in such a dovecote.

3. 3

   A building, a vault or a similar place for the respectful and usually public storage of cinerary urns containing cremated remains.

4. 4

   A niche in such a building for housing urns.