What does the word cackle mean?

Usage examples for cackle

  1. Then I heard something like a cackle, and on gazing around me I saw him standing a little distance from me with a woman by his side. – The Coming of the King by James Hocking
  2. Bicky laughed, what I have sometimes seen described as a hollow, mocking laugh, a sort of bitter cackle from the back of the throat, rather like a gargle. – My Man Jeeves by P. G. Wodehouse
  3. What old woman's cackle is that? – Shirley by Charlotte Brontë