Definition of tunnel:
- A level passage driven across the measures, or at right angles to veins which it is desired to reach; - distinguished from the drift, or gangway, which is led along the vein when reached by the tunnel.
- A vessel with a broad mouth at one end, a pipe or tube at the other, for conveying liquor, fluids, etc., into casks, bottles, or other vessels; a funnel.
- An artificial passage or archway for conducting canals or railroads under elevated ground, for the formation of roads under rivers or canals, and the construction of sewers, drains, and the like.
- The opening of a chimney for the passage of smoke; a flue; a funnel.
- To catch in a tunnel net.
- To form into a tunnel, or funnel, or to form like a tunnel; as, to tunnel fibrous plants into nests.
- To make an opening, or a passageway, through or under; as, to tunnel a mountain; to tunnel a river.
- "From Bapaume to Passchendaele, 1917", Philip Gibbs.
- "By What Authority?", Robert Hugh Benson.
- "Boy Scouts in Mexico; or On Guard with Uncle Sam", G. Harvey Ralphson.