Simply put, Chapeau is the French word for “hat”. If you attend a cycling race or other sporting event, you’ll often hear Francophones exclaim “Chapeau!” to congratulate the winner. In a word, it’s taking off your hat and shaking it in the air while shouting “way to go!”
More personally, when I travel abroad I always wear a navy blue St. Louis Cardinals baseball cap. This small touch serves as a direct connection to my home in St. Louis.