• Forty feet underground in an old stone quarry
    Forty feet underground in an old stone quarry
  • WordNet 3.6
    • adj underground conducted with or marked by hidden aims or methods "clandestine intelligence operations","cloak-and-dagger activities behind enemy lines","hole-and-corner intrigue","secret missions","a secret agent","secret sales of arms","surreptitious mobilization of troops","an undercover investigation","underground resistance"
    • adj underground under the level of the ground "belowground storage areas","underground caverns"
    • adv underground beneath the surface of the earth "water flowing underground"
    • adv underground in or into hiding or secret operation "the organization was driven underground"
    • n underground an electric railway operating below the surface of the ground (usually in a city) "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"
    • n underground a secret group organized to overthrow a government or occupation force
    • ***

Additional illustrations & photos:

The underground railway The underground railway
Underground trolley Underground trolley

Webster's Revised Unabridged Dictionary
  • Interesting fact: The world's first underground was the London Underground in1863. It has 275 stations and 253 miles of track.
    • Underground a group or movement holding unorthodox views in an environment where conventional ideas dominate, as in artistic circles.
    • Underground a secret organization opposed to the prevailing government; as, the French underground during the Nazi occupation.
    • Underground a subway or subway system, especially in the United Kingdom.
    • Underground Being below the surface of the ground; as, an underground story or apartment.
    • adv Underground Beneath the surface of the earth.
    • Underground Done or occurring out of sight; secret.
    • Underground The place or space beneath the surface of the ground; subterranean space. "A spirit raised from depth of underground ."
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Montreal has an underground city, which has over 2,000 shops and 26 kilometres of walkways. This is the largest underground network for any city
    • n underground An underground passage.
    • n underground A contraction of underground railway.
    • underground Beneath the surface of the earth: as, to sink underground.
    • underground Being below the surface of the ground: as, an underground story or apartment.
    • n underground That which is beneath the surface of the ground.
    • underground To place or lay underground, as an electric wire.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: Mexico City is sinking at a rate of 6 to 8 inches a year because it's built on top of an underground reservoir. Wells are drawing out more and more water for the city's growing population of more than 15 million people.
    • adj Underground un′dėr-grownd under the surface of the ground
    • n Underground that which is underground
    • v.t Underground to place underground
    • adv Underground beneath the surface of the earth
    • ***


  • Sir Thomas Overbore
    Sir Thomas Overbore
    “The person who has nothing to brag about but their ancestors is like a potato; the best part of them is underground.”
  • English Saying
    English Saying
    “A degenerate nobleman is like a turnip. There is nothing good of him but that which is underground.”
  • Miguel De Cervantes
    “Fear has many eyes and can see things underground.”
  • Libby Houston
    Libby Houston
    “When your dreams tire, they go underground and out of kindness that's where they stay.”
  • Jello Biafra
    Jello Biafra
    “For every prohibition you create you also create an underground.”


In literature:

There are some underground, because I have worked in them.
"Condemned as a Nihilist" by George Alfred Henty
The barracks were built underground and of stone.
"In the Flash Ranging Service" by Edward Alva Trueblood
Most of the opium dens were underground.
"Complete Story of the San Francisco Horror" by Richard Linthicum
After the disappearance of the workmen all was still in the underground rooms.
"Boy Scouts in the Canal Zone" by G. Harvey Ralphson
They flung themselves down on the sward, close to their underground home.
"Peter and Wendy" by James Matthew Barrie
Lateral haulage underground is necessarily disintegrated by the various levels, and usually has to be done by hand.
"Principles of Mining" by Herbert C. Hoover
In the German line, dugouts underground were constructed to conceal the machine guns and crews.
"Manual of Military Training" by James A. Moss
Nothing so startles a mining community as to have this signal come from underground.
"The Copper Princess" by Kirk Munroe
And the rush of waters filled the underground cave with a mighty, roaring sound.
"The Boy Ranchers in Camp" by Willard F. Baker
Bentwood had a positive genius for the occult and underground.
"The Slave of Silence" by Fred M. White
He is the ruler of the underground kingdom.
"Stories to Read or Tell from Fairy Tales and Folklore" by Laure Claire Foucher
This he fastened to his "parade hat," and wore to lighten his underground labors.
"Reels and Spindles" by Evelyn Raymond
He was one of the first to introduce steam machinery underground with the latter object.
"Lives of the Engineers The Locomotive. George and Robert Stephenson" by Samuel Smiles
Passing through the entrance, the mine gradually widens underground to a depth of 1062 feet.
"The Mines and its Wonders" by W.H.G. Kingston
Where are the underground railroads and watchful friends at every point to help fugitive wives from brutal husbands?
"History of Woman Suffrage, Volume I"
This in turn gave onto a veritable subterranean avenue, and, in time, led to a sort of underground metropolis.
"The Death-Traps of FX-31" by Sewell Peaslee Wright
On the French and British side also, underground defense works were of a most scientific and elaborate character.
"The Story of the Great War, Volume IV (of 8)"
After 1880 there developed an underground socialist movement that was most baffling and disconcerting to the police.
"Violence and the Labor Movement" by Robert Hunter
Is Williams, the underground manager, in the pit?
"Facing Death" by G. A. Henty
Led underground, they found themselves proceeding along a frosty passage lit every few yards by a great chunk of diamond.
"Astounding Stories, July, 1931" by Various

In poetry:

Mind's underground moths
grow filmy wings
and take a farewell flight
in the sunset sky.
"Fireflies" by Rabindranath Tagore
When the grass was closely mown,
Walking on the lawn alone,
In the turf a hole I found
And hid a soldier underground.
"The Dumb Soldier" by Robert Louis Stevenson
ALL my heart is stirring lightly
Like dim violets winter-bound,
Quickening as they feel the brightly
Glowing sunlight underground.
"Song II" by Mathilde Blind
So, they are not underground,
But as nerves and veins abound
In the growths of upper air,
And they feel the sun and rain,
And the energy again
That made them what they were!
"Transformations" by Thomas Hardy
The sound,
That love set ringing in those years
Of agony, exultation, voiceless fears,
And hopes now underground,
Shall not be silenced; it is thrilling yet,
And we shall not forget.
"The Carillon" by John Le Gay Brereton
And lying in my bed that night
Hungry, tired out with sobs, I found
A stretch of barren years in sight,
Where right is wrong, but strength is right,
Where weak things must creep underground,
And I could not sleep sound.
"The Picture Book" by Robert Graves

In news:

Pope Benedict XVI prayed Saturday at an underground train station in Valencia, Spain, where 42 people were killed in a derailment.
An international symposium and its underground offshoot.
8, 2011 Emphatic have recruited former Union Underground vocalist Bryan Scott to fill in while Patrick Wilson continues to recover from a vocal chord injury.
High-cigarette taxes have driven sales underground in New York, ethicist says.
Skanska Wins EUR 153M Contract to Extend Prague Underground Train Network.
Who's still standing in the hip-hop underground.
I keep pruning off its bottom leaves as they give out, but we've got another week or so before the whole thing goes underground for now.
From the underground to the mainstream.
Dogbreath channeled the Replacements at this year's Underground Music Showcase.
Had to stop up the water and sweep it down to the underground parking.
WASHINGTON — Iran has finished installing all the critical equipment at a deep underground site where it is producing nuclear fuel that could quickly be converted to use in a nuclear weapon, international inspectors reported on Friday.
As part of its citywide system, Kristianstad burns wood waste like tree prunings and scraps from flooring factories to power an underground district heating grid.
Love of My Life Worldwide Album: Worldwide Underground.
The old Gadsden Funeral Home on St Philip Street is fast becoming a hub for the local underground/contemporary art scenes, and you can check out the space for yourself at some events scheduled for the coming weeks.
Rains show at the Underground.

In science:

Currently ZEPLIN II is underground at the Boulby site starting to take data.
The Search for Dark Matter, Einstein's Cosmology and MOND
Fig. 5 left shows the underground layout of the SPS and of CNGS at CERN; Fig. 5 right shows the scheme of the SPS operation during a test run.
Atmospheric neutrino and Long Baseline neutrino experiments
In particular, a threshold of 100-200 eV and a sub-keV background comparable to underground experiments were achieved with prototype detectors.
Ultra-Low-Energy Germanium Detector for Neutrino-Nucleus Coherent Scattering and Dark Matter Searches
First VIP experimental results The VIP setup is presently taking data in the low-background Gran Sasso underground laboratory of INFN.
New experimental limit on Pauli Exclusion Principle violation by electrons (the VIP experiment)
We are currently taking data with the 10-liter prototype at the surface laboratory, and making preparations for operation in an underground laboratory.
DMTPC-10L: Direction-Sensitive Dark Matter Detector Prototype
As much production as possible will take place underground.
The Majorana Neutrinoless Double-Beta Decay Experiment
The cross sections can be folded with the underground neutron flux to estimate background rates.
The Majorana Neutrinoless Double-Beta Decay Experiment
Hime, “Muon-induced background study for underground laboratories,” Phys.
The Majorana Neutrinoless Double-Beta Decay Experiment
Due to the proposed deep underground site, the power pulsed electronics and the fine segmentation, cell equalization cannot be repeated using cosmic rays.
CALICE Report to the DESY Physics Research Committee
R8778 and R10789 measured by a high purity Ge (HPGe) detector in Kamioka underground laboratory.
The construction of XMASS 800 kg detector is almost finished in Kamioka underground laboratory.
Right : projection of the reconstructed shower axis (red line, dashed is underground) on the detector plane.
The TIANSHAN Radio Experiment for Neutrino Detection
WIMPs could be detected directly by their collisions with nuclei in underground experiments, such a discovery would be a milestone in physics.
DARWIN: dark matter WIMP search with noble liquids
The XENON10 and WARP (2.3 liter) experiments at the Gran Sasso Underground Laboratory (LNGS) and the ZEPLIN-III experiment at the Boulby laboratory were successful demonstrators, reaching competitive limits on both spin-independent and spin-dependent WIMPnucleon cross sections.
DARWIN: dark matter WIMP search with noble liquids
The WARP-140 experiment, a 100kg-scale LAr TPCs, is under commissioning at LNGS, while the ArDM-1t detector, with a LAr WIMP target of 850 kg, is under commissioning at CERN, with the goal of underground installation in the Canfranc Underground Laboratory in 2011.
DARWIN: dark matter WIMP search with noble liquids