"exoduster" means: An African-American who migrated from a state along the Mississippi River in the Southern United States to Kansas, mostly between 1879 and 1.... 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.