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English definition of “underground”

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underground

noun [no plural]
 
/ˈʌndəɡraʊnd/ UK ( US subway)
A2 a system of trains that is built under a city: the London UndergroundRailways and railway lines
Translations of “underground”
in Korean 지하철…
in Arabic مِتْرو الأنْفاق…
in Portuguese metrô…
in Catalan metro…
in Japanese 地下鉄…
in Italian ferrovia metropolitana…
in Chinese (Traditional) 交通…
in Russian метро…
in Turkish metro, tünel…
in Chinese (Simplified) 交通…
in Polish metro…
(Definition of underground noun from the Cambridge Learners Dictionary © Cambridge University Press)
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