Definition of "fou" []

• Crazy. (adjective)

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• "Page 75. 11. fou: note — _il est fou_, ‘he is mad.’"
• "'Garçon, surtout ne laissez pas sortir le fou' (_feu_) -- meaning 'Don't let the fire go out,' and the intelligent foreigner had immediately guessed from my appearance that I was _le fou_. ""
• "Champagne before the monk Dom Perignon figured out what was happening was called vin fou (vino loco)."