What does the Radley house mean to the children?I have only gotten throught chapter one.
At this point, only getting through chapter one, you should see that the kids view the Radley house as a sort of haunted house or masoleum. They believe a bogeyman-type character lives there. They are afraid of what the bogeyman-type character is capable of and they believe many legends the neighborhood has told about him.
This house signifies that which shouldn't be touched. It is an unattainable, hand-off sort of symbol for them. Although they are intrigued by the house's mystery, they have a reverence and a fear of the place that keeps them from checking it out.
"Radley pecans can kill you."
You have to remember what it is like to be a kid and make stuff up about a person or a place and believe it.