Dictionary

1tunnel

noun tun·nel \ˈtə-nəl\

: a passage that goes under the ground, through a hill, etc.

Full Definition of TUNNEL

1
:  a hollow conduit or recess :  tube, well
2
a :  a covered passageway; specifically :  a horizontal passageway through or under an obstruction
b :  a subterranean gallery (as in a mine)
c :  burrow
tun·nel·like \-nəl-ˌ(l)īk\ adjective

Examples of TUNNEL

  1. The train goes through a tunnel in the mountain.
  2. The moles dug tunnels in the yard.

Origin of TUNNEL

Middle English tonel cask, tun, from Anglo-French, from tone tun
First Known Use: 1508

Rhymes with TUNNEL

2tunnel

verb

: to make a tunnel

tunneled or tunnelledtunnel·ing or tunnel·ling \ˈtən-liŋ, ˈtə-nəl-iŋ\

Full Definition of TUNNEL

intransitive verb
1
:  to make or use a tunnel
2
physics :  to pass through a potential barrier <electrons tunneling through an insulator between semiconductors>
transitive verb
:  to make a tunnel or similar opening through or under; also :  to make (one's way) by or as if by making a tunnel
tun·nel·er \ˈtən-lər, ˈtə-nəl-ər\ noun

Examples of TUNNEL

  1. Workers are tunneling through the hill.
  2. Insects had tunneled into the tree.

First Known Use of TUNNEL

1795

Rhymes with TUNNEL

tunnel

noun tun·nel \ˈtən-əl\   (Medical Dictionary)

Medical Definition of TUNNEL

:  a bodily channel—see carpal tunnel

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