noun

1. a cork or other stopper for the hole in a barrel, cask, or keg
2. a bunghole

Etymology: ME bunge < MDu bonge

transitive verb

1. to close (a bunghole) with a stopper
2. to close as with a bung; stop up

3. Etymology: prob. infl. by bang

   Slang to bruise or damage, as in a fight: with up
4. Brit., Slang to toss; fling; throw