"logmaker" means: A device that creates 'logs' out of burnable waste; the device encases the burnable waste within a newspaper wrapping by the use of a specia.... 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.