from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A natural depression in a land surface communicating with a subterranean passage, generally occurring in limestone regions and formed by solution or by collapse of a cavern roof.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A hole formed in soluble rock by the action of water, serving to conduct surface water to an underground passage
- n. A depressed area in which waste or drainage collects.
- n. A hole in the playfield that rewards the player when the ball is guided into it.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof
Sorry, no etymologies found.