What does the word ducking mean?

Usage examples for ducking

  1. Fortunately the water at that place was only about two feet deep, so the boys were not much the worse for their ducking. – The Ragged Trousered Philanthropists by Robert Tressell
  2. And she was conscious, in her innermost heart, that Afy merited a little wholesome correction, not perhaps to the extent of a ducking. – East Lynne by Mrs. Henry Wood