noun. a sepulchral vault or other structure having recesses in the walls to receive cinerary urns.
- burial vault
noun. a niche for a funeral urn containing the ashes of the cremated dead.
noun. a birdhouse for pigeons.
Example sentences of the word columbarium
1. Noun, singular or mass
Some people choose to bury the ashes of their spouses or put them in a columbarium, a memorial specifically for cremated ashes.