bung-hole
Pronunciation:
/ˈbʌŋˌhəʊl//ˈbʌŋˌhoʊl/noun
Definitions
A hole in a vessel, such as a cask, that may be stopped with a bung.
Example: Pop a tap in the barrel's bung-hole so you can pour us a round of beer, innkeeper!
The anus.