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Definition of Manhole
1. Noun. A hole (usually with a flush cover) through which a person can gain access to an underground structure.
Definition of Manhole
1. n. A hole through which a man may descend or creep into a drain, sewer, steam boiler, parts of machinery, etc., for cleaning or repairing.
Definition of Manhole
1. a hole providing entrance to an underground or enclosed structure [n -S]