Speech of praise (6)
I believe the answer is:
eulogy
'speech of praise' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for eulogy that I've seen before include "Formal expression of praise" , "Speech highly praising someone" , "Panegyric" , "A speech or piece of writing in praise of someone" , "Speech or piece of writing that praises highly" .)