桶口 Traditional form: 桶口 Pinyin (reading): tǒngkǒu Definitions: bunghole see 桶孔 (tǒngkǒng) Characters: 桶 - bucket, pail, tub; can, cask, keg 口 - mouth; entrance, gate, opening Traditional characters: 桶 - bucket, pail, tub; can, cask, keg 口 - mouth; entrance, gate, opening