City (5)
'city' is the definition.
(urban means relating to a city)
This is all the clue.
(Other definitions for urban that I've seen before include "Of towns or cities" , "Living in a city" , "Relating to city life" , "Not rural" , "Relating to town/city" .)
(Other definitions for desk that I've seen before include "School furniture item" , "Work table" , "Place for writing or serving the public" , "Flat surface for doing paper work" , "Item of office (or schoolroom) furniture" .)
'city' is the definition.
(I know that city is a type of city)
This is the entire clue.
(Other definitions for metropolis that I've seen before include "Big city" , "centre of activity" , "Urban centre" , "See" , "London, say" .)