Bung

n. [Cf. Ir. & Gael. buine, buinne, tap, spout, torrent, stream, W. bwng, orifice, bung-hole, Ger. spund, bung, hole, aperture; Prov. Ger. punt, pundt, punten, bunte, Armor. bouñt (Fr. bonde), spigot, bouñta, buñta, to push; O. Eng. bung, pocket, purse, A-S. pung, Icel. pungr, Sw. & Dan. pung, O. H. Ger. phung, Goth. pugg.]

1. The stopper of the orifice in the bilge of a cask.
2. The orifice in the bilge of a cask through which it is filled.
3. A sharper or pickpocket. [Obs. and low.] “You filthy bung, away.” Shak.