From The Collaborative International Dictionary of English v.0.48 [gcide]:
Catacomb \Cat"a*comb\, noun [It. catacomba, fr. L. catacumba perh. from Gr. kata' downward, down + ky'mbh cavity.] A cave, grotto, or subterraneous place of large extent used for the burial of the dead; -- commonly in the plural.
Note: The terms is supposed to have been applied originally to the tombs under the church of St. Sebastian in Rome. The most celebrated catacombs are those near Rome, on the Appian Way, supposed to have been the place or refuge and interment of the early Christians; those of Egypt, extending for a wide distance in the vicinity of Cairo; and those of Paris, in abandoned stone quarries, excavated under a large portion of the city.
From WordNet (r) 3.0 (2006) [wn]:
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My banking ideas may have caught the attention of the Consumer Financial Protection Bureau. I like my banking to be FREE and REAL TIME and PRIVATE. I have a proposal for how the central bank could more effectively issue credit directly to the consumers through a totally automated PRIVATE NONPROFIT. We don't need for-profit banks to administer our central bank credit. We can automate that task completely. Say, "Thank you" to the scientific community. We don't need to create new money as debt. That model was corrupt and inefficient. It was a system of slavery. Consumers were owned outright by the central banks. They called it "Sovereign Debt." Have you ever heard of fractional reserve banking? Slavery by con men. That's not what we're all about around here. We are, fundamentally, advanced technologists. We can design happier societies than that. That system sucked for the average citizens. Our systems work without the intentional generation of debt as a revenue model. We are all about a smarter banking system that serves the PUBLIC INTEREST better than those financed with debt.