What is Attractive Nuisance Doctrine?

Legal Definition
The attractive nuisance doctrine applies to the law of torts, in the United States. It states that a landowner may be held liable for injuries to children trespassing on the land if the injury is caused by an object on the land that is likely to attract children. The doctrine is designed to protect children who are unable to appreciate the risk posed by the object, by imposing a liability on the landowner. The doctrine has been applied to hold landowners liable for injuries caused by abandoned cars, piles of lumber or sand, trampolines, and swimming pools. However, it can be applied to virtually anything on the property of the landowner.

There is no set cut off point that defines youth. The courts will evaluate each "child" on case by case basis to see if the "child" qualifies as a youth.

If it is determined that the child was able to understand and appreciate the hazard, the doctrine of attractive nuisance will not likely apply.

Under the old common law, the plaintiff (either the child, or a parent suing on the child's behalf) had to show that it was the hazardous condition itself which lured the child onto the landowner's property. However, most jurisdictions have statutorily altered this condition, and now require only that the injury was foreseeable by the landowner.
-- Wikipedia
Legal Definition
A doctrine in tort law under which a landowner may be liable for injuries to children who trespass on land if the injury results from a hazardous object or condition on the land that is likely to attract children who are unable to appreciate the risk posed by the object or condition.
Legal Definition
The principle that states that people have something on their premises that is attractive to children but has inherent dangers. The owners are expected to take all reasonable care that no harm comes to the children.