Answer:
The statement on the part of Atticus that "Jem's definitions are very nearly accurate sometimes" is meant to set a playful tone because earlier Jem had said that entailment meant getting your tail stuck in a crack.
Explanation:
The word entailment is significant in this part of the story because it means that Mr. Cunningham could not just sell his property to get cash and pay his debts. He might have a farm, but he does not have to right to sell it a large part of it and dispose of the money as he wishes. Therefore Walter and his father are poor, and kind of "stuck in a crack" when it comes to affording to take a lunch to school like Miss Caroline expects.
Revoked and canceled because why fake it
In this quote, Scout wants to highlight how difficult it was for a black man to get access to justice at the time. She tells us that Tom Robinson had been given "due process of law." This implies that Tom Robinson was treated fairly in the eyes of the law because he had had a lawyer and a trial.
However, Scout also highlights the fact that, besides these advantages, Robinson's trial was definitely not fair and just. In fact, he was harshly judged because of his skin colour, which many people took to be almost evidence of Robinson's guilt. Therefore, as Scout highlights, Tom had "lost" in front of his peers, and he was never able to gain support from people who were against him from the beginning. Tom had lost the case in the "secret court of men's heart."