What does the word plunge mean?

Usage examples for plunge

  1. The sun stood on the mountains, about to plunge into the sea and swim to the new world. – The Campaner Thal and Other Writings by Jean Paul Friedrich Richter
  2. A hare was once seen to start from its form at the sound of the hunting horn, run towards a pool of water at a considerable distance, plunge in, and run to some rushes in the middle, where it lay down, and concealed itself. – Illustrative Anecdotes of the Animal Kingdom by Samuel Griswold Goodrich
  3. I certainly don't want to see any of the girls again, and the first plunge will be the worst of it. – Queen Hildegarde by Laura Elizabeth Howe Richards