/tun/ , n. , v. , tunned, tunning .
n.
1. a large cask for holding liquids, esp. wine, ale, or beer.
2. a measure of liquid capacity, usually equivalent to 252 wine gallons.
v.t.
3. to put into or store in a tun or tuns.
[ bef. 900; (n.) ME tunne, OE; c. D ton, G Tonne ( tunna; (v.) late ME, deriv. of the n. ]