That spot spoilt her evening clothes (5)
I believe the answer is:
'that' is the definition.
Both the definition and answer are adverbs.
Perhaps there's an association between them I don't understand?
'spot spoilt her evening clothes' is the wordplay.
'clothes' indicates the answer is hidden within the clue (the letters clothe the hidden word).
'THERE' is hidden in the letters of 'spot spoilt her evening'.
Can you help me to learn more?
(Other definitions for there that I've seen before include "Thither" , "expression of sympathy" , "it may be said to be comforting" , "Place: as indicated" , "Yonder" .)