A wooden vessel or tub with two carrying handles, which was common in the past and made it possible to transport it by two or by means of poles by four persons. The name is derived from the Old German word "zwibar", i.e. "two-carrying vessel" as a counterpart to "einbar" (bucket which could be carried by one person). The must or wine bucket used to be a widely used unit of measurement for 30 to 40 buckets (which varied greatly from region to region, usually about 150 to 200 litres). See also under wine containers.