Firkin is the word commonly used and applied to antique wooden buckets with wood handles and lid. The buckets are normally about, about 10 inches (250 mm) high and 10 inches in diameter. They were formerly used to store sugar and other items.
A firkin is actually an old English unit of volume. The name is derived from the Dutch word vierdekijn, which means fourth, such as a quarter of a full-size barrel.
Casks in this size which are called firkins were the most common container for cask ale. Butter and soap used to be sold by the firkin, too, except it was measured in weight, instead of volume