1. the hole in a barrel, cask, or similar container through which liquid is poured in or drained out
Usage: standard term in cooperage and beverage production
2. a stopper or plug used to close the bunghole of a barrel or cask
Usage: also called a bung

Examples

• The cooper carefully drilled the bunghole near the base of the wooden barrel.
• Wine is typically drawn from the barrel through the bunghole using a tap.
• A wooden bunghole must be sealed tightly to prevent leakage during storage.
• The brewer inserted a rubber bung into the bunghole to keep the contents fresh.
• During fermentation, gases escape through the bunghole of the carboy.