Band-aid means: An adhesive bandage, a small piece of fabric or plastic that may be stuck to the skin in order to temporarily cover a small wound.. It is mainly Philippine English and may not be understood outside that context. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.