Noun
a barrel that holds beer
Source: WordNetI do condition my hair with honey and beer. I smell like the bottom of a beer barrel for days afterwards, but it's very good for the hair. Catherine Zeta-Jones
Gifford and jailer Paulet had arranged for a local brewer to facilitate the movement of messages between Queen Mary and her supporters by placing them in a watertight casing inside the stopper of a beer barrel. Source: Internet
Gifford organised the Walsingham plan to place Babington's and Queen Mary's encrypted communications into a beer barrel cork which were then intercepted by Phelippes, decoded and sent to Walsingham. Source: Internet