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| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| cave in | |
| —vb | |
| 1. | to collapse; subside |
| 2. | informal to yield completely, esp under pressure |
| —n | |
| 3. | the sudden collapse of a roof, piece of ground, etc, into a hollow beneath it; subsidence |
| 4. | the site of such a collapse, as at a mine or tunnel |
| 5. | informal an instance of yielding completely, esp under pressure |
| cave (kāv) Pronunciation Key
A naturally occurring underground hollow or passage, especially one with an opening to the surface of the Earth. Caves can form through a variety of processes, including the dissolution of limestone by flowing water, the differential cooling of volcanic magma (which occurs when the outside surface of the lava cools, but the inside continues to flow downwards, forming a hollow tube), or the action of wind and waves along a rocky coast. |
cave in
Fall in, collapse, as in The earthquake made the walls cave in. [Early 1700s]
Give in, admit defeat, as in The prosecutor's questions soon made the witness cave in. [Early 1800s]
Collapse, faint, or die from exhaustion, as in After a twenty-mile hike I caved in. [Mid-1800s]