What is Flagon?
1.
australian, n; a large bottle ( 2L to 4L ) of wine, usually cheap.
Aww mate, you had 3 flagons last night? Can it really be done?
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2.
Irish: a 2 litre bottle of cider
ah sean could go in and get us 3 flagons
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3.
Flag+wagon=flagon. Any large American made vehicle festooned with multiple US flags or other patriotica.
Mom drove us to the movies in the flagon, how embarassing.