brassard

noun

bras·​sard brə-ˈsärd  ˈbra-ˌsärd 

1

: armor for protecting the arm see armor illustration

2

: a cloth band worn around the upper arm usually bearing an identifying mark

Word History

Etymology

French brassard, from Middle French brassal, from Old Italian bracciale, from braccio arm, from Latin bracchium — more at brace entry 2

First Known Use

1830, in the meaning defined at sense 1