noun a fermenting vat.
2. tun ·noun an indefinite large quantity.
3. tun ·vi to put into tuns, or casks.
4. tun ·noun a drunkard;
so called humorously, or in contempt.
5. tun ·noun a weight of 2,240 pounds. ·see ton.
6. tun ·noun any shell belonging to dolium and allied genera;
called also tun-shell.
7. tun ·noun a large cask; an oblong vessel bulging in the middle, like a pipe or puncheon, and girt with hoops; a wine cask.
8. tun ·noun 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.