any of a series of vaults or galleries in an underground burial placeusually used in pl.
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'catacomb'
; ult. LL catacumba
, pl. catacumbae
, region between 2d & 3d milestones of the Appian Way, Catacombs; prob. by dissimilation
< L cata tumbas
, at the graves < cata
(< Gr kata
, down), by + tumbas
, acc. pl. of tumba