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the Underground - definition and synonyms


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noun the Underground pronunciation in British English /ˈʌndə(r)ˌɡraʊnd/
  1. 1
    a system of public transport consisting of trains that travel in tunnels below a city. The Underground in London is also called the Tube and in some other cities it is also called the Metro. The American word is subway.


to fall over forwards so that your face hits the ground or another surface

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the activity of exploring abandoned buildings and other manmade structures

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