What is the meaning of Flagon?

A large vessel resembling a jug, usually with a handle, lid, and spout, for serving drinks such as cider or wine at a table; specifically , such a vessel used to hold the wine for the ritual of Holy Communion.

1. A flagon and its contents; as much as fills such a vessel.

A flagon and its contents; as much as fills such a vessel.

A large bottle for drinks such as beer, cider, or wine; also, a bottle with a cap used by travellers.

1. The amount that such a bottle holds, about 2 pints or 1 litre.

The amount that such a bottle holds, about 2 pints or 1 litre.

accusative singular of flago

Source: wiktionary.org