What is the French word for "hat"?

The story behind the answer

Chapeau is the general French word for “hat,” the broad category for headwear with a brim or structured crown. The other options name different items: casque means “helmet,” bonnet is a knit cap or beanie, and écharpe is a “scarf.”

A helpful memory trick: French speakers say “Chapeau!” to mean “Well done!”—like tipping your hat in respect. The idiom tirer son chapeau à quelqu’un literally means “to take one’s hat off to someone.” Remember: chapeau = hat (and praise); bonnet = beanie; casque = protective helmet; écharpe = scarf you wrap around your neck.