noun Download 🔗Share (often plural) An underground system of tunnels and chambers with recesses for graves, used (in former times) as a cemetery; a tunnel system used for burying the dead, as in Paris or Ancient Rome. Examples : "During their trip to Rome, the tourists explored the ancient catacombs, where early Christians were buried centuries ago. " "During their visit to Rome, the tourists explored the ancient catacombs, marveling at the historical underground burial chambers. " architecture history archaeology religion place building culture Chat with AIVocabulary GamePractice Reading