Learn how to say Flagons correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word flagon:
a large container in which drink is served, typically with a handle and spout:
a silver flagon
the amount of liquid held in a flagon:
a flagon of beer
a container similar to a flagon used to hold the wine for the Eucharist.
a large bottle in which wine or cider is sold, typically holding 1.13 litres (about 2 pints).
late Middle English: from Old French flacon, based on late Latin flasco, flascon-, of unknown origin. Compare with flask