"virl" means: A Scottish term for a ferrule — the metal ring or cap fitted at the end of a walking stick, staff, or similar implement to prevent it from s.... This is a fairly neutral word with no inherent risk attached. There is no real cause for parental concern; it is descriptive vocabulary rather than something dangerous. If your child uses it, context will usually make the meaning clear. A brief, curious question about where they heard it is generally enough to know whether to follow up.