What does the word tunnel mean?

Usage examples for tunnel

  1. He leaped from the train, when passing through the tunnel. – The Extraordinary Adventures of Arsene Lupin, Gentleman-Burglar by Maurice Leblanc
  2. There was the long, gloomy tunnel down which he fled. – The Hound of the Baskervilles by A. Conan Doyle
  3. He followed Edgar across the cellar into a sort of tunnel. – Clementina by A.E.W. Mason