Manhole vs. Manway

Manholenoun

A hole in the ground used to access the sewers or other underground vaults and installations.

Manwaynoun

A hole or duct giving access to a utility area for maintenance purposes.

Manholenoun

A hole providing access to the inside of a boiler, tank etc.

Manwaynoun

A small passageway, as in a mine, that a man may pass through.

Manholenoun

(informal) A man's anus, in a sexual context.

Manholenoun

A hole through which a man may descend or creep into a drain, sewer, steam boiler, parts of machinery, etc., for cleaning or repairing.

Manholenoun

a hole (usually with a flush cover) through which a person can gain access to an underground structure

Manhole

A manhole (alternatively utility hole, maintenance hole, or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel. Manholes are often used as an access point for an underground public utility, allowing inspection, maintenance, and system upgrades.