rimless词源

英文词源

bonnet (n.)

late 14c., Scottish bonat "brimless hat for men," from Old French bonet, short for chapel de bonet, from bonet (12c., Modern French bonnet) "kind of cloth used as a headdress," from Medieval Latin bonitum "material for hats," perhaps a shortening of Late Latin abonnis "a kind of cap" (7c.), which is perhaps from a Germanic source.

balmoral

"A round brimless hat with a cockade or ribbons attached, worn by certain Scottish regiments", Mid 19th century (in sense 2): named after Balmoral Castle in Scotland.