Answer: rier

AnswerCrossword Clue
RIERWhaler's oil cask.
RIEROil cask, on a whaler.
RIERWhaling cask.
RIERWhaler's cask.
RIERWhale-oil cask
RIERWhale-oil container
RIERWhale oil cask
RIERWhaler's cask
RIERWhaler's oil cask