pothole
noun
[ ˈpɒthəʊl ]
• a deep natural underground cave formed by the erosion of rock, especially by the action of water.
• a depression or hollow in a road surface caused by wear or subsidence.
• "he drove very cautiously over the potholes in the road"
pothole
verb
• produce potholes in (the ground).
• "the road is being torn up and potholed by passing trucks"
• explore underground caves as a pastime.
• "my mother and father met while they were potholing"
Origin:
early 19th century: from Middle English pot ‘pit’ (perhaps of Scandinavian origin) + hole.