wristband
noun [ C ] uk/ˈrɪst.bænd/ us/ˈrɪst.bænd/
手腕带（绕在手腕上的带子，如手表带）
a piece of material that goes around the wrist, for example to hold a watch
带在手腕上的带子（用以表示人们支持某组织或某观念）
a piece of material that people wear around their wrists to show that they support a particular organization or idea