What is at the end of a cap?

The end of a hat is called something that starts with T. This can sometimes fall of? Can someone please find the answer and put it in the comment i so really need to know. The people who have helped me out thank-you ever so much. I really need to know and i need some help. Thank-you again the people who helped me. Best wishes Love.........????? The end of a hat is called something that starts with T. This can sometimes fall of? Can someone please find the answer and put it in the comment i so really need to know. The people who have helped me out thank-you ever so much. I really need to know and i need some help. Thank-you again the people who helped me. Best wishes Love.........?????