tun

A large cask; an oblong vessel bulging in the middle, like a pipe or puncheon, and girt with hoops; a wine cask. (See a diagram comparing cask sizes.)

A fermenting vat.

A traditional unit of liquid measure (from the volume of such a cask) equal to 252 wine gallons or 2 pipes.

Again, by 28 Hen. VIII, cap. 14, it is re-enacted that the tun of wine should contain 252 gallons, a butt of Malmsey 126 gallons, a pipe 126 gallons, a tercian or puncheon 84 gallons, a hogshead 63 gallons, a tierce 41 gallons, a barrel 31.5 gallons, a rundlet 18.5 gallons.

Synonym of long ton: a unit of mass equal to 2240 pounds, 20 hundredweights of 112 pounds avoirdupois each.

Synonym of ton: any extremely or excessively large amount.

He therefore sends you, meeter for your spirit, / This tun of treasure; and, in lieu of this, / Desires you let the dukedoms that you claim / Hear no more of you.

A Tun of Man in thy Large bulk is writ, / But sure thou'rt but a Kilderkin of wit.

To put into tuns, or casks.

Strong beer that is brewed in small quantities, and ale, whatever the quantity may be, should be tunned the second day after brewing; and small beer should be tunned as soon as it has fairly taken the yeast

A part of the ancient Maya Long Count Calendar system which corresponds to 18 winal cycles or 360 days.