What does the word hissing mean?

Usage examples for hissing

  1. The enemies of the queen did not cease hissing and shouting, " We do not want to hear any thing about the queen; we will not hear the monkey- song!" – Marie Antoinette And Her Son by Louise Muhlbach Official
  2. It was too dark to see the water below, but he heard the hard rain hissing on its surface. – A Dog with a Bad Name by Talbot Baines Reed