pot·hole
noun/ˈpɒthəʊl/
/ˈpɑːthəʊl/
- a large rough hole in the surface of a road that is formed by traffic and bad weather
（路面的）坑洼 - a deep hole that is formed in rock, especially by the action of water
岩石中的溶洞；地壶；瓯穴
Word Originearly 19th cent.: from Middle English pot ‘pit’ (perhaps of Scandinavian origin) + hole.