sake cask; sake tun
A large barrel or vat used for storing or fermenting sake. The reading しゅそう is a Sino-Japanese reading used in more technical or formal contexts.
Large sake casks are lined up in the sake brewery.
この酒槽は杉でできている。
This sake cask is made of cedar.
酒 (sake) + 槽 (cask, vat). The reading さかぶね is a native Japanese compound, while しゅそう is the Sino-Japanese reading.