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Related to Chapeau bras: chapeaus
|a hat so made that it can be compressed and carried under the arm without injury. Such hats were particularly worn on dress occasions by gentlemen in the 18th century. A chapeau bras is now worn in the United States army by general and staff officers.|
See also: Chapeau
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.