"outharbour" means: In Newfoundland and Labrador, any city, town, or village having a harbour, other than the main port of St. John'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.