Chapeau

n.	1.	A hat or covering for the head.
	2.	(Her.) A cap of maintenance. See Maintenance. Chapeau bras 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.

Noun

1.

chapeau - headdress that protects the head from bad weather; has shaped crown and usually a brim Synonyms: hat, lid

bearskin, beaver, boater, bonnet, bowler, bowler hat, brim, busby, campaign hat, cavalier hat, cocked hat, cowboy hat, crown, deerstalker, derby, dress hat, dunce cap, dunce's cap, fedora, felt hat, fool's cap, fur hat, hat, hatband, headdress, headgear, high hat, homburg, leghorn, lid, millinery, opera hat, Panama, Panama hat, pith hat, pith helmet, plug hat, poke bonnet, porkpie, porkpie hat, sailor, shako, shovel hat, silk hat, skimmer, slouch hat, sombrero, sou'wester, Stetson, stovepipe, straw hat, sun helmet, ten-gallon hat, titfer, top hat, topee, topi, topper, toque, trilby, tyrolean, woman's hat