from The Century Dictionary.
- noun An opening through which gutters and drains empty into a subterranean sewer.
Sorry, no etymologies found.
A useful means of purging one's sins is to stick a finger down one's throat, sending gouts of alcohol spurting from your gullyhole and preventing its nefarious effects from getting to you by making sure it never gets the opportunity to get into your bloodstream in the first place.
There is a deep pitfall, and an ugly gullyhole where the burn crosses the road at the town-head, and if ye miss the path, the rocks by the beach are steep, and in a night like this -- "