What does the word loop mean?

Usage examples for loop

  1. I've got a longer head than you have, because I've kept it clear, and hate of a man never will get my neck in the loop. – Dixie Hart by Will N. Harben
  2. He made sure that Bud had the loop in his hand, then slipped back past his horse and went on, walking more quickly. – Cow-Country by B. M. Bower