"habble" means: A Scottish dialect word with several related meanings: as a noun, a state of confusion or perplexity; as a transitive verb, to perplex or co.... 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.