[ ˌkɒl(ə)m'bɛ:rɪəm ]
■ noun ( plural columbaria ) a room or building with niches for funeral urns to be stored.
Origin
C18: from L., lit. 'pigeon house'.
COLUMBARIUM
Meaning of COLUMBARIUM in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004