Definition of firkin noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈfɜːkɪn//
    ; NAmE NAmE//ˈfɜːrkɪn//
    (old use)
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  1. 1a small barrel (= a round container with flat ends), used mainly for liquids, butter or fish
  2. 2a unit for measuring volume, equal to about 41 litres
  3. Word OriginMiddle English ferdekyn, probably from the Middle Dutch diminutive of vierde ‘fourth’ (a firkin originally contained a quarter of a barrel).