Cŏl'ŭm-bā'rĭ-ŭm, n.

noun

n.; pl. CŌL'UM-BĀ'RI-Ā. [Lat. See infra.] (Arch.) (a.) A subterranean sepulcher, in the walls of which were niches for urns of ashes. Gwill. (b.) (pl.) The holes left in a wall of mason-work for the insertion of the ends of timbers;—so called as resembling the niches of a pigeon-house. Weale.