Bunghole

[1] Bungholes can also be utilized to insert and remove sensing probes or equipment like mixers to agitate the contents within a vessel.

When barrels full of a commodity were shipped, the recipient would often bore new bungholes of the most suitable size and placement rather than remove the existing bung.

[citation needed] Closed-head steel barrels and drums now used for shipment of chemicals and petroleum products have a standardized bunghole arrangement, with one 2 inch NPT and one 3/4 inch NPT threaded bunghole on opposite sides of the top head.

— Hamlet, act V, scene 1[2]Usage of the term as a slang word for the anus dates back to at least the 17th century, as shown in Thomas Urquhart's translation of Gargantua by François Rabelais, first published in 1653.

I say and maintain, that of all torcheculs, arsewisps, bumfodders, tail-napkins, bunghole cleansers, and wipe-breeches, there is none in the world comparable to the neck of a goose ..."[3] Bung dropper is a device inserted into the rectum of a slaughtered animal, mostly of a pig, to separate it from carcass during the dressing process.