noun
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.
酒蔵には大きな酒槽が並んでいる。
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.
樽 is a general term for a barrel or cask, while 酒槽 specifically refers to a cask for sake.
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.