What is another word for "bung"?

Roget's Thesaurus (1911) lists these synonyms for "bung": air, alley, bar, beadle, blind, block, blockade, bolt, button, caecal, caecum, cerberus, choke, clinch, close, closure, constipation, contraction, cork, corner, cover, cram, cul-de-sac, dam, door, doorkeeper, dossil, down, embolus, fill, hermetically, hinder, hindrance, impassable, impenetrable, imperforate, imperforation, impermeability, impermeable, impervious.