A flagon is a large leather, metal or ceramic vessel, commonly a pitcher

Pitcher (container)

A pitcher is a container with a spout used for storing and pouring contents which are liquid in form. Generally a pitcher also has a handle, which makes pouring easier.A ewer is a vase-shaped pitcher, often decorated, with a base and a flaring spout...

, often used for drink, whether this be water, ale, or something else.

Christian use

As a Roman Catholic term or use, the flagon is the large vessel, usually glass and metal, that holds the wine. Before March 2002, a flagon may have also been used to hold the wine during the consecration of the Eucharist

Eucharist

The Eucharist , also called Holy Communion, the Sacrament of the Altar, the Blessed Sacrament, the Lord's Supper, and other names, is a Christian sacrament or ordinance...

 and then be poured into many chalices. This pouring of the precious blood from flagon to chalice was eliminated. A smaller container called a cruet

Cruet

A cruet , also called a caster, is a small flat-bottomed vessel with a narrow neck. Cruets often have an integral lip or spout, and may also have a handle. Unlike a small carafe, a cruet has a stopper, lid, or phoedelia...

 is used for the priest's chalice, usually identical to the cruet of water, which is mingled with the wine before consecration. The cruets do not remain on the altar after the preparation of the gifts.

In the Anglican Church, the flagon is the vessel that contains the wine to be consecrated. If more than one chalice is used during the administration of Communion, the flagon (or an additional cruet

Cruet

A cruet , also called a caster, is a small flat-bottomed vessel with a narrow neck. Cruets often have an integral lip or spout, and may also have a handle. Unlike a small carafe, a cruet has a stopper, lid, or phoedelia...

 filled with wine and water) is placed on the altar at the Offertory, and other chalices are brought to the altar after the Breaking of the Bread. There should be only one chalice on the altar during the Great Thanksgiving.

New Zealand

In New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

, a flagon refers to a glass vessel filled with beer available in public bars or bottle stores. Drinkers could take their own washed flagons or swap their empties for those pre-filled, corked and ready for sale. The flagon was followed by the half-gallon (2.27 l) jar and was preceded by the square rigger and the bluey. These were commonly used during the period of six-o'clock closing of bars. A flagon can hold different volumes of beer or wine and is thought to have originated from an amendment to the licensing laws, which took effect in 1881. The amendment allowed winemakers to sell wine from their vineyards for off-licence consumption, so long as the quantity was two gallons (9.09 l) or more (hence the "2 g" flagon). Before this change winemakers could only sell wine from hotels. A half-gallon flagon was a common volume used for beer.

Ireland

In modern Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 a flagon usually refers to a 2-litre measurement of cider

Cider

Cider or cyder is a fermented alcoholic beverage made from apple juice. Cider varies in alcohol content from 2% abv to 8.5% abv or more in traditional English ciders. In some regions, such as Germany and America, cider may be termed "apple wine"...

in a brown tinged plastic bottle. Although more fashionable with teenagers in the 1990s, flagons, and cheap cider in general, are seeing a massive resurgence as the current economic woes push (now middle aged) former cider drinkers out of the brasseries and back into parks at night.