Definition of wristband noun from the Oxford Advanced American Dictionary

 

wristband

 noun
noun
NAmE//ˈrɪstbænd//
 
 
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a strip of material worn around the wrist, as a decoration, to absorb sweat during exercise, or to show support for something He was wearing a Save the Children wristband. The wristbands were sold to raise awareness of the breast cancer campaign.
See the Oxford Advanced Learner's Dictionary entry: wristband