At a better racecourse, impressed by outdoor dining area, maybe (7)
I believe the answer is:
terrace
'at' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'a better racecourse impressed by outdoor dining area maybe' is the wordplay.
'TERRACE' is hidden in amongst the letters.
But, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for terrace that I've seen before include "Continuous row of houses" , "Row of houses joined together" , "Bank - houses in a row" , "Caterer (anag) - houses in a row" , "Patio" .)