1. a large cask or barrel for storing liquids, especially wine or beer
2. a unit of liquid capacity equal to 252 gallons
Usage: archaic

Examples

• The winery stored its finest vintage in oak tuns.
• Workers rolled the heavy tun into the cellar.
• The brewery ordered several new tuns for fermentation.
• Each tun could hold hundreds of gallons of ale.
• The cooper repaired the damaged tun with fresh hoops.
• Wine aged slowly in the massive wooden tun.