tunnel

Definitions


[ˈtʌnl], (Noun)

Definitions:
- an artificial underground passage, especially one built through a hill or under a building, road, or river
(e.g: a road tunnel through the Pyrenees)


- a long, half-cylindrical enclosure used to protect plants, made of clear plastic stretched over hoops
(e.g: cover plants in rows with a cloche tunnel)


Phrases:

Origin:
late Middle English (in the senses ‘tunnel-shaped net’ and ‘flue of a chimney’): from Old French tonel, diminutive of tonne ‘cask’. tunnel dates from the mid 18th century


[ˈtʌnl], (Verb)

Definitions:
- dig or force a passage underground or through something
(e.g: he tunnelled under the fence)

- (of a particle) pass through a potential barrier


Phrases:

Origin:
late Middle English (in the senses ‘tunnel-shaped net’ and ‘flue of a chimney’): from Old French tonel, diminutive of tonne ‘cask’. tunnel dates from the mid 18th century




definition by Oxford Dictionaries