underground
/ˌʌn.dəɹˈɡɹaʊnd/ noun C2- The regions beneath the surface of the earth, both natural (eg. caves) and man-made (eg. mines).
- A movement or organization of people who resist political convention. · the French underground during World War II
- A movement or organization of people who resist artistic convention.
Plural undergrounds
From the library
For Nagaina will surely kill him underground.”
I began my operations at Gloucester Road Station, where a very helpful official walked with me along the track and allowed me to satisfy myself not only that the back-stair windows of Caulfield Gardens open on the line but the even more essential fact that, owing to the intersection of one of the larger railways, the Underground trains are frequently held motionless for some minutes at that very spot.”
We travelled by the Underground as far as Aldersgate; and a short walk took us to Saxe-Coburg Square, the scene of the singular story which we had listened to in the morning.
The domed roof had half fallen in and blocked up the underground passage from the palace by which the queens used to enter.
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