A woven strip of material typically used medically in order to support a dressing or splint, or to provide support to the body.
Sometimes bandages can be used/worn as an accessory or even as a form of clothing (protective or otherwise) as opposed to being used exclusively for medical purposes. One of the best and most prominent examples of this is when a character wears bandages binding their breasts/chest or torso, in which case it would be known as a sarashi.