chapeau (n.)youdaoicibaDictYouDict[chapeau 词源字典]
1520s, from Middle French chapeau (Old French capel, 12c.) "hat," from Vulgar Latin *cappellus, from Late Latin capellum (also source of Italian cappello, Spanish capelo, Portuguese chapeo), diminutive of cappa (see cap (n.)).[chapeau etymology, chapeau origin, 英语词源]