man·hole
noun/ˈmænhəʊl/
/ˈmænhəʊl/
- a hole in the street that has a cover over it, used when somebody needs to go down to examine the pipes or sewers below the street
（检查地下管道用的）人孔，检查井 Oxford Collocations DictionaryManhole is used before these nouns:- cover