1、a plug for a bunghole in a cask.
2、Saving at the spigot and wasting at the bunghole.
3、Step motors drive sprue guns to realize the accurate positioning of the eccentric bunghole automatically.
4、No one would now say, as my wife's grandmother used to, that there was nothing to do with children but "put them in a barrel and feed them through the bunghole until they're 21."
