[1] : The Collaborative International Dictionary of English v.0.48

adit \ad"it\ a^d"i^t, n. l. aditus, fr. adire, aditum, to
   go to; ad + ire to go.
   1. an entrance or passage. specifically: the nearly
      horizontal opening by which a mine is entered, or by which
      water and ores are carried away; -- called also drift
      and tunnel.
      1913 webster

   2. admission; approach; access. r.
      1913 webster

            yourself and yours shall have
            free adit.                            --tennyson.
      1913 webster
see also:
drift tunnel 

[2] : The Collaborative International Dictionary of English v.0.48

tunnel \tun"nel\ tu^n"ne^l, n. f. tonnelle a
   semicircular, wagon-headed vault, a tunnel net, an arbor, of.
   also tonnel; dim. of tonne a tun; -- so named from its
   resemblance to a tun in shape. see ton.
   1. a vessel with a broad mouth at one end, and a pipe or tube
      at the other, for conveying liquor, fluids, etc., into
      casks, bottles, or other vessels; a funnel.
      1913 webster

   2. the opening of a chimney for the passage of smoke; a flue;
      a funnel.
      1913 webster

            and one great chimney, whose long tunnel thence
            the smoke forth threw.                --spenser.
      1913 webster

   3. an artificial passage or archway for conducting canals,
      roads, or railroads under elevated ground, for the
      formation of roads under rivers or canals, and the
      construction of sewers, drains, and the like.
      1913 webster

   4. mining 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.
      1913 webster

   tunnel head metal., the top of a smelting furnace where
      the materials are put in.

   tunnel kiln, a limekiln in which coal is burned, as
      distinguished from a flame kiln, in which wood or peat
      is used.

   tunnel net, a net with a wide mouth at one end and narrow
      at the other.

   tunnel pit, tunnel shaft, a pit or shaft sunk from the
      top of the ground to the level of a tunnel, for drawing up
      the earth and stones, for ventilation, lighting, and the
      like.
      1913 webster
see also:
ton drift gangway tunnel head tunnel kiln flame kiln 
tunnel net tunnel pit tunnel shaft 

[3] : The Collaborative International Dictionary of English v.0.48

tunnel \tun"nel\, v. t. imp.  p. p. tunneled
   tu^n"ne^ld or tunnelled; p. pr.  vb. n. tunneling
   or tunnelling.
   1913 webster
   1. to form into a tunnel, or funnel, or to form like a
      tunnel; as, to tunnel fibrous plants into nests. --derham.
      1913 webster

   2. to catch in a tunnel net.
      1913 webster

   3. to make an opening, or a passageway, through or under; as,
      to tunnel a mountain; to tunnel a river.
      1913 webster
see also:
tunneled tunnelled tunneling tunnelling 

[4] : The Collaborative International Dictionary of English v.0.48

tunnel \tun"nel\, v. i.
   to make a tunnel; as, to tunnel under a river.
   pjc

[5] : WordNet (r) 2.0

tunnel
     n 1: a passageway through or under something, usually underground
          especially one for trains or cars; "the tunnel reduced
          congestion at that intersection"
     2: a hole in the ground made by an animal for shelter syn: burrow
     v 1: move through by or as by digging; "burrow through the
          forest" syn: burrow
     2: force a way through
     also: tunnelling, tunnelled
see also:
burrow tunnelling tunnelled 

[6] : Moby Thesaurus II by Grady Ward, 1.0

119 moby thesaurus words for "tunnel":
   abri, access, adit, aisle, alley, ambulatory, antre, aperture,
   approach trench, arcade, artery, avenue, bore, bunker, burrow,
   cave, cavern, channel, cloister, colonnade, communication,
   communication trench, conduit, connection, corridor, couch,
   countermine, countersink, coupure, course, cove, covered way,
   covert, deepen, defile, delve, den, depress, dig, dig out, dike,
   ditch, dive, double sap, dredge, drill, drive, duct, dugout, earth,
   egress, entrance, entrenchment, excavate, exit, ferry, fire trench,
   flying sap, ford, form, fortified tunnel, fosse, foxhole, furrow,
   gallery, gouge, gouge out, groove, grot, grotto, grub, hole,
   ingress, inlet, interchange, intersection, junction, lair, lane,
   lodge, lower, mew, mine, moat, opening, outlet, overpass, parallel,
   pass, passage, passageway, penetrate, portico, quarry,
   railroad tunnel, run, sap, scoop, scoop out, scrabble, scrape,
   scratch, sewer, shaft, shovel, sink, slit trench, spade,
   subterrane, subway, traject, trajet, trench, trough, troughing,
   troughway, underpass, warren, way

Tunnel >> T Words
Tunnel, definition of term: Tunnel
tunnel_pag1.html

Wind Tunnel >> W Words
Wind Tunnel, definition of term: Wind Tunnel
wind+tunnel_pag1.html

Carpal Tunnel S >> C Words
Carpal Tunnel S, definition of term: Carpal Tunnel S
carpal+tunnel+s_pag1.html

Tunnel Records - Hamburg

http://www.tunnel.de/, score=100, date indexed=October 5, 2005, 8:58 am

Chesapeake Bay Bridge-Tunnel Homepage
...Whether you are driving north or south, the Chesapeake Bay Bridge-Tunnel showcases the.....Both a tourist attraction and a travel convenience, the Chesapeake Bay Bridge-Tunnel.....Tunnel is a man-made phenomena surrounded by the natural beauty of the Chesapeake Bay. A..
http://www.cbbt.com/, score=100, date indexed=October 5, 2005, 8:52 am

Chicago Tunnel Company Railroad Home Page
...This site is about the Chicago Tunnel Company, which was a narrow gauge electric freight.....Learn about the History of the Chicago Tunnel Company from the beginnings of train.....The Links Page has branches you can take to other websites related to the Chicago Tunnel..
http://www.ameritech.net/users/chicagotunnel/tunnel1.html, score=98, date indexed=May 15, 2005, 6:40 am

Bypass Firewall with secure Tunneling from HTTP-Tunnel
...HTTP-Tunnel v3.3.2019 released! This release features fixes and upgrades for the various.....HTTP-Tunnel v3.3.1700 released! This release features RC4 encryption, completely rewritten.....2003 HTTP-Tunnel..
http://www.http-tunnel.com/, score=97, date indexed=October 5, 2005, 8:37 am

Your Anthracite Action Adventure
...Pioneer Tunnel Coal Mine and Steam Train - a Top Ten Tourist Attraction in Pennsylvania..
http://www.pioneertunnel.com/, score=95, date indexed=October 5, 2005, 9:50 pm

HOLLAND TUNNEL
... ADD DESCR HERE..
http://www.panynj.gov/tbt/htframe.HTM, score=94, date indexed=March 27, 2005, 3:39 pm

Carpal tunnel syndrome, the facts about CTR
...carpal tunnel, endoscopic, carpal tunnel syndrome, wrist surgery, hand problems, hand pain, wrist pain, endoscopic.....Most have a friend or family member who has had carpal tunnel syndrome and many have had a carpal tunnel release operation themselves.....I doubt there are few people in the United States who have not heard of carpal tunnel..
http://www.carpaltunnel.com/, score=94, date indexed=October 5, 2005, 10:42 am

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