What does the word Raca mean that Jesus warned against saying in Mathew 5:22?

What does the word raca mean that Jesus warned against saying in Mathew 5:22? Empty-Headed And Foolish (Mathew 5:22) But I tell you that anyone who is angry with a brother or sister will be subject to judgment. Again, anyone who says to a brother or sister, ‘Raca,’ is answerable to the court. And anyone … Read more