Meaning of زیر زمین in Urdu

English usage of زیر زمین

subway lines that go overground
This three-dimensional complex of surface closed depressions, subterranean conduits, caves, and springs is known as karst terrain.
I got involved with the French underground
the green fields are underlaid with limestone
the roses are underplanted with pink and white bulbs
It was not uncommon for respondents to heavily underscore the words ‘secure job with a pension’ in their answers to my question about why they went to university.
I've slept in my undershorts , but I was too tired to change out of my shirt last night.
By pulling up, the pilot may be able to protect more vulnerable parts of the aircraft such as the canopy or engines by taking a strike on the undersurface of the aircraft.
‘You could at least turn your back,’ her cheeks were faintly red as the dress dropped to the floor, her white corset and underthings binding the shapely body beneath.
She packed five undervests , three pairs of boxer shorts, a tea-mug, the chopsticks (never forget those), slippers (not to be brought back home), and so on.