jaw hole

Noun

jawhole (plural jawholes)

1. (Scotland, dated, dialectal) A hole or an open drain into which sewage or waste water is thrown; the opening of a sewer; or a cesspool or cesspit, an underground pit or container used to collect and store sewage and wastewater from a house in areas without a centralized sewer system.
   • This jawhole, as it is connected with the drains of the neighbourhood and of the Palace itself, is a real mouth of Avernus, vomiting at all times, but especially in warm weather, a pestilential stretch on all who live in its vicinity, and being a perpetual cause of dangerous fevers. [...] close to...1842, Walker, Alexander, Purification of Edinburgh, etc. [Letters on the sanitary condition of Edinburgh.], page 4
2. A jawbox or tenement sink.