Tun (?), n. [AS. tunne. See Ton a weight.]
1.
A large cask; an oblong vessel bulging in the middle, like a pipe or puncheon, and girt with hoops; a wine cask.
2. Brewing
A fermenting vat.
3.
A certain measure for liquids, as for wine, equal to two pipes, four hogsheads, or 252 gallons. In different countries, the tun differs in quantity.
4. Com.
A weight of 2,240 pounds. See Ton.
[R.]
5.
An indefinite large quantity.
Shak.
A tun of man in thy large bulk is writ.
Dryden.
6.
A drunkard; -- so called humorously, or in contempt.
7. Zool.
Any shell belonging to Dolium and allied genera; -- called also tun-shell.
© Webster 1913.
Tun, v. i. [imp. & p. p. Tunned (?); p. pr. & vb. n. Tunning.]
To put into tuns, or casks.
Boyle.
© Webster 1913.