also: きぶね
noun
wooden vat; wooden tank
Refers to a large wooden container, especially one used in traditional sake brewing. The reading もくそう is standard; きぶね is a rarer alternate reading.
酒蔵には大きな木槽が並んでいる。
Large wooden vats are lined up in the sake brewery.
この木槽は江戸時代から使われている。
This wooden tank has been used since the Edo period.
桶 is a general term for a wooden bucket or tub, often smaller and used for various purposes, while 木槽 specifically refers to a large vat or tank, especially in sake brewing.
Compound of 木 (wood) and 槽 (vat, tank). The reading もくそう uses the on'yomi of both characters, while きぶね uses the kun'yomi for 木 and an irregular reading for 槽.