pothole

noun

1. 1.A shallow pit or other edged depression in a road's surface, especially when caused by erosion by weather or traffic.
2. 2.A pit formed in the bed of a turbulent stream.
3. 3.A vertical cave system, often found in limestone.
4. 4.A pit resulting from unauthorized excavation by treasure hunters or vandals.
5. 5.A hole or recess on the top of a stove into which a pot may be placed.