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underground cable


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WordReference Random House Learner's Dictionary of American English © 2026
un•der•ground /adv. ˈʌndɚˈgraʊnd; adj., n. -ˌgraʊnd/USA pronunciation   adv. 
  1. beneath the surface of the ground.
  2. in hiding or secrecy;
    not openly:Their party went underground to fight the system.

adj. 
  1. existing, situated, or operating beneath the surface of the ground.
  2. hidden or secret;
    not open:underground political activities.
  3. published or produced by political or social radicals:an underground newspaper.
  4. experimental;
    avant-garde:an underground movie.

n. [countable]
  1. the place or region beneath the surface of the ground.
  2. Governmenta secret organization fighting the established government or occupation forces:the French underground of World War II.
  3. Transport, British Terms[Brit.]a subway system.

WordReference Random House Learner's Dictionary of American English © 2026
sub•way /ˈsʌbˌweɪ/USA pronunciation   n. 
  1. Transport, British Termsan underground electric railroad: [countable]no delays this morning on the subways. [uncountable; by + ~]to travel by subway.
  2. British Terms[countable][Chiefly Brit.]a short tunnel or underground passageway;
    underpass.

WordReference Random House Unabridged Dictionary of American English © 2026
un•der•ground  (adv., un′dər ground′;adj., n., v. un′dər ground′),USA pronunciation adv. 
  1. beneath the surface of the ground:traveling underground by subway.
  2. in concealment or secrecy;
    not openly:subversion carried on underground.

adj. 
  1. existing, situated, operating, or taking place beneath the surface of the ground.
  2. used, or for use, underground.
  3. hidden or secret;
    not open:underground political activities.
  4. published or produced by political or social radicals or nonconformists:an underground newspaper.
  5. avant-garde;
    experimental:an underground movie.
  6. critical of or attacking the established society or system:underground opinion.
  7. of or for nonconformists;
    unusual:an underground vegetarian restaurant.

n. 
  1. the place or region beneath the surface of the ground.
  2. an underground space or passage.
  3. Governmenta secret organization fighting the established government or occupation forces:He fought in the French underground during the Nazi occupation of France.
  4. Government(often cap.) a movement or group existing outside the establishment and usually reflecting unorthodox, avant-garde, or radical views.
  5. Transport, British Terms[Chiefly Brit.]a subway system.

v.t. 
  1. to place beneath the surface of the ground:to underground utility lines.
  • under- + ground1 1565–75

WordReference Random House Unabridged Dictionary of American English © 2026
sub•way  (sub′wā′),USA pronunciation n. 
  1. Transport, British TermsAlso called,[esp. Brit.,] tube, underground. an underground electric railroad, usually in a large city.
  2. British Terms[Chiefly Brit.]a short tunnel or underground passageway for pedestrians, automobiles, etc.;
    underpass.

v.i. 
  1. Transportto be transported by a subway:We subwayed uptown.
  • sub- + way1 1820–30

Collins Concise English Dictionary © HarperCollins Publishers::
underground / ˈʌndəˌɡraʊnd/
  1. occurring, situated, or used below ground level: an underground tunnel, an underground explosion
  2. secret; hidden: underground activities
 / ˌʌndəˈɡraʊnd/
  1. going below ground level: the tunnel led underground
  2. into hiding or secrecy: the group was driven underground
 / ˈʌndəˌɡraʊnd/
  1. a space or region below ground level
  2. a movement dedicated to overthrowing a government or occupation forces, as in the European countries occupied by the German army in World War II
  3. (as modifier): an underground group
  4. the underground ⇒ an electric passenger railway operated in underground tunnels
    US and Canadian equivalent: subway
  5. (usually preceded by the) any avant-garde, experimental, or subversive movement in popular art, films, music, etc
  6. (as modifier): the underground press, underground music

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