Meaning of TUNNEL in English

TUNNEL

I. ˈtə-n ə l noun

Etymology: Middle English tonel cask, tun, from Anglo-French, from tone tun

Date: 1508

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 -n ə l-ˌ(l)īk adjective

II. verb

( -neled or -nelled ; -nel·ing or tun·nel·ling ˈtən-liŋ, ˈtə-n ə l-iŋ)

Date: 1795

intransitive verb

1. : to make or use a tunnel

2. physics : to pass through a potential barrier

electrons tunnel ing 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-n ə l-ər noun

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.