Definition of "sink-hole" [sink-hole]

• A hole for foul liquids to pass through; specifically, an orifice for that purpose in a sink. (noun)
• Any place given over to foulness or filth; especially, a resort of debauched and depraved persons. See sink n., 3. (noun)
• One of the cavities formed in limestone regions by the removal of the rock through the action of rain or running water, or both. (noun)

The Century Dictionary (Public Domain)

• "The “sink-hole” is growing at a rate of two blocks per hour and I live only five miles from the epicenter."
• "Instead, the evidence suggests the euro-zone economy is disappearing down a sink-hole."
• "This trompe l'oeil back-garden uses painted lines to make it appear that the tree is disappearing into a sink-hole:"