glory holes

noun

Meaning

A hole in a mineshaft where an orebody is mined upwards until it breaks through the surface into the open air.
(sexual) A hole in a screen or wall big enough to allow an erect penis to be stuck through, made to facilitate anonymous sex with another person.
A military trench.
An excavation into the sea floor designed to protect the wellhead equipment installed at the surface of a petroleum well from icebergs or pack ice.
A hole in the side of a furnace used to heat glass held on a metal rod.
A deep built-in cupboard under the eaves or stairs of a house used for general storage, particularly of unrelated or unwanted items stored in some disorder.