"scourie" means: A Scottish name for a young gull — specifically a gull that has not yet acquired adult plumage. Young gulls go through several years of mott.... 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.