Answer: kilderkins

AnswerCrossword Clue
KILDERKINSHalf-barrel quantities
kilderkinsThis amount as a unit of measurement
kilderkinsKILDERKIN, (obsolete) a cask measuring 18 gallons (1/2 barrel)
kilderkinsA cask for liquids or other substances, holding 16 or 18 gallons