'Columbarium' definitions:

Definition of 'columbarium'

From: WordNet
noun
A birdhouse for pigeons [syn: dovecote, columbarium, columbary]
noun
A niche for a funeral urn containing the ashes of the cremated dead [syn: columbarium, cinerarium]
noun
A sepulchral vault or other structure having recesses in the walls to receive cinerary urns

Definition of 'Columbarium'

From: GCIDE
  • Columbarium \Col`um*ba"ri*um\, n.; pl. L. Columbaria [L. See Columbary.] (Rom. Antiq.) (a) A dovecote or pigeon house. (b) A sepulchral chamber with niches for holding cinerary urns. [1913 Webster]