Showing impatience as driver in London district (7)
I believe the answer is:
tooting
'showing impatience as driver' is the definition.
(I've seen this before)
'in london district' is the wordplay.
I cannot quite understand how this works, but
'in' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for tooting that I've seen before include "Showing impatience on road" , "Showing impatience as driver" , "London suburb" , "S. London district" , "Blasting a horn" .)