Firkin
Firkin , noun
[From Anglo-Saxon feówer four (or an allied word, perh. Dutch or Danish) + -kin. See Four.]
1.
A varying measure of capacity, usually being the fourth part of a barrel; specifically, a measure equal to nine imperial gallons. [English]
2.
A small wooden vessel or cask of indeterminate size, -- used for butter, lard, etc. [United States]