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Underground

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Merriam-Webster's Collegiate Dictionaryun·der·ground I \ˌən-dər-ˈgrau̇nd\ adverb DATE 14th century 1. beneath the surface of the earth2. in or into hiding or secret operation II \ˈən-dər-ˌgrau̇nd\ noun DATE 1594 1. a subterranean space or channel2. an underground city railway system3. a. a movement or group organized in strict secrecy among citizens especially in an occupied country for maintaining communications, popular solidarity, and concerted resistive action pending liberation b. a clandestine conspiratorial organization set up for revolutionary or other disruptive purposes especially against a civil order c. an unofficial, unsanctioned, or illegal but informal movement or group; especially : a usually avant-garde group or movement that functions outside the establishment III \ˈən-dər-ˌgrau̇nd\ adjective DATE 1601 1. being, growing, operating, or situated below the surface of the ground2. conducted by secret means3. a. existing outside the establishment an underground literary reputation b. existing outside the purview of tax collectors or statisticians the underground economy4. a. produced or published outside the establishment especially by the avant-garde underground movies underground newspapers b. of or relating to the avant-garde underground an underground moviemaker an underground theater English Etymologyunderground underground (adv.) 1571, "below the surface," from under + ground (n.). Adj. is attested from 1610; fig. sense of "hidden, secret" is attested from 1632; adj. meaning "subculture" is from 1953, from World War II application to resistance movements against German occupation, on analogy of the dominant culture and Nazis. Noun sense of "underground railway" is from 1887 (phrase underground railway itself is attested from 1834). Oxford Collocations Dictionary for Students of EnglishOxford Advanced Learner's Dictionary-牛津双解-OALD7☞ undergroundunder·ground adjective/ 5QndE^raund; NAmE -dEr^- / [only before noun] 1. under the surface of the ground 地下的；地面以下的: underground passages / caves / streams 地下通道/洞穴/溪流 underground cables 地下电缆 ⇨ compare overground 2. operating secretly and often illegally, especially against a government 秘密的,非法的,暗中的,地下的(尤指反政府的): an underground resistance movement 地下抵抗运动 adverb/ 7QndE5^raund; NAmE -dEr5^- / 1. under the surface of the ground 在地下；在地面下: Rescuers found victims trapped several feet underground. 营救人员发现有受难者被困在地下几英尺处。 toxic waste buried deep underground 深埋在地下的有毒废弃物 2. in or into a secret place in order to hide from the police, the government, etc. 隐蔽地；隐匿地: He went underground to avoid arrest. 他隐藏起来以防被捕。 noun/ 5QndE^raund; NAmE -dEr^- / 1. (often the Underground) (BrE) (NAmE sub·way) [sing.] an underground railway / railroad system in a city (城市的)地下铁路系统,地铁: underground stations 地铁车站 the London Underground 伦敦地铁 I always travel by underground. 我总是乘地铁。 ⇨ compare metro n. (1), tube (6) 2. the underground [sing. + sing. / pl. v.] a secret political organization, usually working against the government of a country 秘密政治组织；(反政府)地下组织 OLTunderground adj.⇨ secret 2Webster's Third New International Dictionary, UnabridgedSearch result show the entry is found in: underground railroad , or underground railwayundergroundI. \| ̷ ̷ ̷ ̷| ̷ ̷\ adverbEtymology: under (II) + ground, n.1. : beneath the surface of the earth < water flowing underground > < burrowing underground >2. : in or into hiding or secret operation < an ideology driven underground develops into a more virulent form — W.O.Douglas > < the association soon became subversive and went underground — Harold Ingrams >II. \ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷\ adjective1. : being, growing, or situated below the surface of the ground < underground cave > < underground cellar > < underground stream > < underground rhizomes >2. : dwelling in an underworld < mythical underground people >3. : used or adapted for use or wear underground : employed or performing duties underground < underground foreman > < underground shovel >4. : done or occurring underground especially away from public knowledge : conducted or conveyed by secret or stealthy means < underground revolutionary activity > < the underground life of civilized societies — Edward Sapir >III. nounEtymology: underground (II) 1. : the space or place beneath the surface of the ground : a subterranean space or channel2. : ground or soil lying beneath the surface or beneath something else3. : an underground city railway system < the London Underground >4. a. : a movement or group organized in strict secrecy among citizens in an occupied or totalitarian country for maintaining communications, popular solidarity, and concerted resistive action pending liberation < the underground in Occupied France > b. : a clandestine conspiratorial cell or organization set up for revolutionary or other disruptive purposes especially against a civil order — used with the < the Communist underground in wartime Germany >IV. adjective1. a. : existing outside the establishment or mainstream < an underground literary reputation > b. : existing outside the purview of tax collectors or statisticians < the underground economy >2. a. : produced or published outside the establishment especially by the avant-garde < underground movies > < underground newspapers > b. : of or relating to the avant-garde underground < an underground theater >V. noun: a usually avant-garde group or movement that functions outside the establishmentVI. \¦ ̷ ̷ ̷ ̷ ¦ ̷ ̷ \ transitive verbEtymology: underground (I) : to place underground < undergrounding power lines >

Underground Surface A Underground Secret B Establishment In