armband

名词 armband:

1. worn around arm as identification or to indicate mourning
2. a band worn around the upper arm

1. Conventional outward signs of grief for the dead, such as a black armband or black clothes.
   戴孝为哀悼死者而采用的一种传统的标志，如戴在臂上的黑纱或黑衣服

arm.band

n.（名词）
A band worn around the upper arm, often as identification or as a symbol of mourning or protest.
臂章：围在上臂的带子，常用作身分证明或者戴孝、抗议的标志