Thrilled visiting site of a fire (7)
I believe the answer is:
atingle
'thrilled' is the definition.
(thesaurus)
'visiting site of a fire' is the wordplay.
'visiting' becomes 'at'.
'site of a fire' becomes 'ingle' (I am not sure about this - if you are sure you should believe this answer much more).
'at'+'ingle'='ATINGLE'
Can you help me to learn more?
(Other definitions for atingle that I've seen before include "shivery" , "feeling prickly" , "Feeling thrilled" , "Being excited" , "quivering with delight?" .)