Definition for TUN'NEL

TUN'NEL, n. [Fr. tonnelle.]

  1. A vessel with a broad mouth at one end, and a pipe or tube at the other, for conveying liquor into casks, bottles, &c.
  2. The opening of a chimney for the passage of smoke; called generally a tunnel.
  3. A large subterraneous arch through a hill for a canal and the passage of boats. Smaller drains or culverts are also called tunnels. – Cyc.
  4. An arched way or road under ground or a river; as, the tunnel under the Thames in England.

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