pothole, n. & v.
1 Geol. a deep hole or system of caves and underground river-beds formed by the erosion of rock esp. by the action of water.
2 a deep hole in the ground or a river-bed.
3 a hole in a road surface caused by wear or subsidence.
--v.intr. Brit. explore potholes.
potholer n. potholing n.