underground

Etymology

Definitions

1. 1

   Below the ground

   Below the ground; below the surface of the Earth.

   • There is an underground tunnel that takes you across the river.
   • One of the hidden glories of Victorian engineering is proper drains. Isolating a city’s effluent and shipping it away in underground sewers has probably saved more lives than any medical procedure except vaccination.
2. 2

   Hidden, furtive, secretive.

   • These criminals operate through an underground network.
3. 3

   Of or relating to an art forms (such as music) or subculture that is outside the…

   Of or relating to an art forms (such as music) or subculture that is outside the mainstream, especially one that is unofficial and hidden from the authorities.

   • underground music
4. ›+ 9 more definitionsshow fewer

   1. 4

      Below the ground.

      • The tunnel goes underground at this point.
   2. 5

      Secretly.

   3. 6

      The regions beneath the surface of the earth, both natural (eg. caves) and man-made (eg.…

      The regions beneath the surface of the earth, both natural (eg. caves) and man-made (eg. mines).

   4. 7

      Synonym of subway

      Synonym of subway: a railway that is under the ground.

      • London Underground
   5. 8

      A movement or organization of people who resist political convention.

      • the French underground during World War II
      • Victor, please, don't go to the underground meeting tonight.
   6. 9

      A movement or organization of people who resist artistic convention.

   7. 10

      To route electricity distribution cables underground.

      • One is to underground where no other alternative will work, and this method should be used universally in urban regions as it now is in “downtown” sections.
      • The utility now wants the network to be undergrounded in the urban areas, which would mean substations with 33 kV distribution swtichgear.
   8. 11

      simple past and past participle of undergrind

   9. 12

      The London Underground.

      • Heathrow has a 28% share of passengers arriving by rail, two-thirds of whom come by the Underground.

The neighborhood