To enclose in or as if in a cavern.(verb-transitive)
To hollow out.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "cavern" in a sentence
"We have lights with us and there are lights on the walls, but still some of the cavern is shadowed by darkness."
"The word cavern does not convey any idea of this immense space; words of human tongue are inadequate to describe the discoveries of him who ventures into the deep abysses of earth."
""Where is his mountain cavern, and how can I reach it?""