Restorative words from fallen person (4-2-2)
I believe the answer is:
pick-me-up
'restorative' is the definition.
(pick-me-up is a kind of restorative)
'words from fallen person' is the wordplay.
I cannot really see how this works, but
'person' could be 'pi' (PI is an example) and 'pi' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for pick-me-up that I've seen before include "A restorative tonic drink" , "Stimulative drink" , "A tonic to restore health or relieve depression" , "Stimulant" , "I could do with a lift" .)