Bush, maybe, cultivated in urban place (lacking a name) (10)
I believe the answer is:
republican
'bush' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'cultivated in urban place lacking a name' is the wordplay.
'cultivated in urban place' becomes 'republic' (I can't explain this - if you can you should believe this answer much more).
'lacking' means to remove the last letter (the word is incomplete or lacking).
'a name' becomes 'Ana'.
'ana' with its last letter removed is 'an'.
'republic'+'an'='REPUBLICAN'
'maybe' acts as a link.
Can you help me to learn more?
(Other definitions for republican that I've seen before include "American in party" , "Eg Lincoln" , "anti-monarchist" , "Member of US political party" , "in foreign party" .)