Therapy (9)
'therapy' is the definition.
(synonyms)
This is all the clue.
(Other definitions for treatment that I've seen before include "Management of something, illness say" , "prescribed drugs possibly" , "Hospital care" , "See 41 Down" , "Medical attention" .)
(Other definitions for speech that I've seen before include "Oration, address" , "Formal talk to an audience" , "words" , "Formal address or discourse" , "Formal discourse to an audience" .)