1 definition by Nurse!

To be extremely drunk whilst retaining a classy demeanor: especially when one is drinking expensive wine.
Comes from the French word Chateau meaning a large house or mansion usually with grounds, gardens and often it's own vineyard.
Pierre: "Oh Buffy, this '78 Bordeaux is fabulous!"
Buffy: "Oh yes Pierre, I've had 3 bottles already...(hits floor)."
Pierre: "Well, looks like Buffy is chateaued."
by Nurse! June 21, 2006
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